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Taronga: Who’s Who In The Zoo - Season 6 Episode 2 -
Toothless Tiger
Toothless Tiger
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03:29Big cats, they are prone to getting high potassium in their blood while they're under anaesthetic
03:35and that can be a life-threatening complication, particularly with long procedures.
03:39We want to try and keep our anaesthetic time as low as we can, but dental procedures can be quite lengthy.
03:44Being an older cat, there's a little bit of an increased risk with his anaesthetic.
03:48The high potassium can affect his heart rhythm and in a really severe case, you can actually have a cardiac arrest.
03:54So we'll keep the procedure as short as we can.
03:56Before they can begin the procedure, they'll need to sedate Sartu.
04:02We have got a hand injection and a 21-gauge needle.
04:08Alright, good luck.
04:10Thank you.
04:12So we're going to head in now with the anaesthetic drugs that the vets have given us to administer.
04:17It won't be long until they call us, I don't think, to say come up.
04:20We'll let the vets know how his injection has gone.
04:23Alright, I'm going.
04:26Touch.
04:31Well done.
04:33Megan to Alisa.
04:34Yeah.
04:34I was just like, please.
04:36Go ahead.
04:38Looks as though we've got 100%.
04:40He's lying calmly on the grass.
04:43That's awesome.
04:44Well done.
04:44That's so amazing.
04:45That's all gone perfectly.
04:47With the first tiger asleep.
04:51I've checked.
04:51He's got no blink.
04:53The team quietly enter the den and prepare him for the move to the animal hospital.
05:00Let me get the catheter stuff ready.
05:01So we've got quite a big team working on Satu.
05:07So I'm getting a rating.
05:09Heart rate's 80.
05:10We've got three vets working on him.
05:12We've got three nurses.
05:13Sephalic's usually hard.
05:15We want to make sure that we do everything as efficiently as we can.
05:19Every team member plays a crucial role.
05:23And as they continue prepping Satu, vet nurse Jane notices a change in his vitals.
05:30He's got an odd breathing pattern.
05:33Getting closer, closer, closer than breath hold?
05:35Yeah, yeah.
05:37How long have we been since injection?
05:39Oh, 10, 15 minutes.
05:40Okay.
05:41Vet Alisa watches closely, assessing the tiger's respiration rate.
05:47Yeah, he hasn't had a good deep breath for a minute.
05:48If Taronga in Sydney had a prize for the most relaxed and laid-back resident...
06:03Buddy, what are you doing?
06:05..this guy would certainly be a top contender.
06:11This is Carlos.
06:13He is one of our Capybara boys.
06:15We've got four males.
06:17Capybara boys are native to South America.
06:21I kind of like to call them South American hippopotamuses.
06:25They love to spend time in the water.
06:27They do have webbed feet, just like a duck.
06:30And they hold their breath for five minutes as well, just like hippos.
06:36It's actually their kind of safety refuge.
06:38So they do have quite a few predators in the wild.
06:41And what they'll do, they'll go into the water to protect themselves.
06:44You can see with his ears, eyes and nose, they're all in a straight line all together.
06:49So they'll kind of just be sitting with those above and they can see and hear everything.
06:54Well, Darcy, you might want to cover his ears for this next bit.
06:58So tomorrow he's just booked in for a general anaesthetic, just to make sure he's all nice
07:03and healthy, obviously when he is under the anaesthetic, we can actually get a good look what's going on.
07:08Like Taronga's Sumatran tigers in Dubbo, six-year-old Carlos is also getting on a bit.
07:16Carlos is turning six in a couple of weeks.
07:19Now six for a Capybara is actually getting quite old for them.
07:22In the wild, life expectancy is probably about seven or eight for a male.
07:27So much the same as our tigers, Darcy will not only get a physical, but a dental check too.
07:35With Capybaras, they are the world's largest rodents.
07:38So being a rodent, they have really big incisor teeth growing constantly.
07:43We give them a lot of brows, you know, branches, and that actually helps with their dental care.
07:48If you've ever wondered what a Capybara toothbrush looks like, and I know I have, well, wonder no more.
07:56This is a Cocos log.
07:58They'll chew on that throughout the day, just kind of trims down his teeth
08:02and just make sure they don't become overgrown.
08:04With the general anaesthetic tomorrow, we can actually get a much better look at his teeth
08:07just to make sure they're all nice and healthy and there's no issues with them as well.
08:11Carlos is super affectionate.
08:14He's super comfortable with people.
08:16He's very tactile.
08:17He loves pats.
08:18You can give him a good scratch like this.
08:21And yeah, just really curious.
08:22When we come in, he's always kind of the first one to come over to see what food we have
08:26or just what we're up to as well.
08:28This trusting relationship between Keeper Darcy and Carlos the Capybara
08:33might be tested tomorrow when Carlos has to be anaesthetised.
08:39My role will be to hand-inject Carlos for his procedure.
08:43Capybara skin is quite tough, so it's a bit hard to get the needle in.
08:46I know he's going to do great, but I've been building up so much for this hand injection.
08:52I want it to go smoothly.
08:53So yeah, just thinking about that a lot.
08:54So quite nerve-wracking.
08:56A lot of anxiety right now.
09:00Yeah, he hasn't had a good deep breath for a minute.
09:03Back at Taronga Western Plains Zoo.
09:05All right, let me get you out of the way.
09:07Aged Sumatran tiger Satu has just been sedated.
09:11Last time he had a 16 tube.
09:13But he's now struggling to breathe.
09:16We're just tubing it.
09:17It's not an uncommon occurrence in aged animals under anaesthetic,
09:22and the vet team begins intubating him to assist his breathing.
09:26Just tell me when you're ready.
09:27Yep, ready.
09:30Gee, mate.
09:32Gee, Tim.
09:33Have you got a visual?
09:34Not really.
09:35I can see the epiglottis.
09:37No, we might have to change to sternal, I think.
09:39There's a lot of flop going on.
09:41So we're just going to have to sit him up on his tummy.
09:43To get a better position for tubing.
09:45On three.
09:47One, two, three.
09:48Insternal.
09:50Leg under.
09:52Yep.
09:53Is that better, Catherine?
09:54Yeah, that's heaps better.
09:55With any older animal, there are increased risks with anaesthetic.
09:59Just because their organs are a bit more tired,
10:01they may not be working as well.
10:03He's doing very tiny, shallow breaths.
10:05It's all right.
10:05We'll just get him on the truck and...
10:06Yeah.
10:07Just...
10:08We can breathe for him if we need to.
10:10With his breathing now supported,
10:13the vet team can move Satu to the wildlife hospital
10:17to be prepped for his dental exam.
10:20Good to go.
10:20Good to go.
10:21Yep.
10:21Oh, God, what a crowd.
10:25Oh, yeah.
10:31Okay, one, two, three.
10:34Go.
10:35He got it.
10:35Okay.
10:37All right, so we'll get him on.
10:39Hook him up.
10:40Yep.
10:40So we're on 4%.
10:41We are on 2% for leaders.
10:44It's nothing like hitting the ground running.
10:47The treatment room is packed with veterinary staff,
10:50and there's also a crowd gathered to watch not one,
10:55but two tigers making a visit to Dubbo's Wildlife Hospital.
11:00Yes, everybody, this is David and Tracey.
11:02Thank you.
11:03All right, yeah.
11:04Left side.
11:05Yep.
11:05Okay, so 201's missing.
11:08Yep.
11:09202 has three millimetres all round and abrasion.
11:14So we're very privileged to be welcoming
11:16veterinary dental specialist David to Dubbo.
11:19He's actually come here all the way from Melbourne.
11:21Okay, generitis of one, calculus of one.
11:23And David's one of a handful of veterinary dental specialists
11:26in Australia who has the skills and the knowledge
11:29and experience to do this type of procedure on a tiger.
11:32So this is a tiger that I looked at in 2011.
11:35and also in 2019, and he fractured these canine teeth,
11:40which are the big fang teeth,
11:41and I did what's called root canal procedures on them.
11:45And I'm back here today to take some x-rays.
11:48So we'll have to leave in a minute.
11:51Okay, I'm ready when you're out.
11:55Clear.
11:56I'm ready when you're out.
11:57Yeah.
11:57While dental specialist David works his way through the necessary x-rays...
12:02One done, looks good.
12:04X-ray again.
12:05...vet Elisa monitors a sample of Satu's blood
12:09to check how he's responding to the anaesthetic.
12:12So we've just done his first sort of blood tests,
12:14and we've got his baseline potassium,
12:15which is something we've got to monitor really carefully
12:18through his procedure.
12:19So his baseline is four, which is perfectly normal,
12:22and our intervention point is if it increases by one.
12:25Satu's blood potassium levels are good,
12:28which means there is little risk of damage to the tiger's heart.
12:33But if the levels were to get too high,
12:36it could cause a cardiac arrest.
12:38Jane, you got a blood pressure there?
12:40Yep, got it.
12:40Everything needs to be considered.
12:43116 over 58.
12:44The team are constantly balancing the tiger's surgery
12:48with the clinical realities of sedating such an aged animal.
12:53We are seeing some of the kidney values a little bit on the high side,
12:56and we want to make sure that we're not making anything worse,
12:59so we're watching his blood pressure really closely.
13:01His heart may not function as well as a younger cat.
13:03We may have some issues underlying with his kidneys,
13:06and we certainly don't want to make those things worse
13:08while he's under anaesthetic.
13:09With Satu being older,
13:11a low blood pressure event during anaesthetic,
13:12that can actually push them into kidney failure.
13:17Still to come...
13:18He's a bit nervous.
13:19..Darcy's big surprise...
13:21I think he definitely knows something is happening.
13:23..but just how will Carlos react?
13:26Feeling a little bit nervous about it all.
13:28..and...
13:29One, two, three...
13:31..double trouble.
13:33Some tough decisions ahead...
13:35He's not particularly stable.
13:37..for vet Elisa.
13:38We're in the danger zone.
13:39Here's a quick echidna quiz.
13:47How many termites do you think
13:50these spiny anteaters devour each day?
13:54A few hundred?
13:55A few thousand?
13:57Nope.
13:58Each echidna in the wild
13:59would eat about 10,000 termites a day.
14:02That's more than a few.
14:04So if you had to rustle up that many,
14:07you might need to get a little creative.
14:10Think outside the box.
14:13Yep, this box.
14:15What we're doing here today, it's a little unusual.
14:17I'm here to find some termite mounds,
14:20set some traps and hopefully be capturing some termites
14:23to bring back for the echidnas.
14:26I've chosen this location
14:27because we believe it may be an active termite mound.
14:30It is experimental, no guarantees
14:33that we're going to be able to collect anything,
14:35but we're willing to sort of do a bit of trial and error.
14:38Laura has travelled to some local bushland
14:41to try out an interesting termite trap technique.
14:45I've got a bucket here.
14:46It's got some holes drilled in the bottom.
14:47What I'm going to do is pop down next to the nest.
14:51Its scientific name is a termite bait station.
14:55Going to collect up some soil from nearby.
14:57Basically, it's a bucket full of tasty termite treats.
15:01A little bit of leaf litter as well.
15:05Here's some wood that I've collected from nearby.
15:07It looks like it's already had some termite activity on it.
15:10What I'm going to do is I'm going to pop it in the bucket here
15:12to try and encourage them to enter this one
15:14and start to eat this wood.
15:17I mean, it looks pretty enticing, right?
15:21I just want to get the bottom of it just below the surface level here
15:25so the holes are just in the soil.
15:28A little bit of water will just create a moist environment
15:30and encourage them to move in.
15:33And really, what self-respecting termite wouldn't want to move in?
15:37The last thing left to do is just pop the lid on it.
15:41We'll leave it there and we'll see if some termites have moved in.
15:50Hmm.
15:51They termite?
15:53Or they termite not?
15:55We'll have to wait and see.
16:00Back in Dubbo at the Taronga Wildlife Hospital...
16:04So we just need to radiograph 404 and 104.
16:07Not one, but two aged Sumatran tigers
16:11are each booked in for a thorough dental check-up
16:15and health assessment.
16:16X-ray.
16:17First up is 18-year-old Sartu.
16:20And while the dental examination is quite routine,
16:24it's the side effects from the general anaesthetic
16:27that's keeping the vet team on their toes.
16:30We may have some issues with these kidneys
16:32and we certainly don't want to make those things worse
16:34while he's under anaesthetic.
16:35Low blood pressure can actually push them into kidney failure.
16:38And it's not just low blood pressure that they have to monitor.
16:42The drug combination he's had
16:43does tend to keep their blood pressure a little bit high,
16:45so we want to make sure that that's all fine.
16:47Blood pressure is 102 over 58, mean of 73.
16:52So at the moment his blood pressure's really good.
16:55Unhappy.
16:56Entitled, stable.
16:57Everything's stable, though.
16:58If we're seeing trends that we need to intervene,
17:01then we've got everything ready to do that.
17:04The team are allowing a three-hour window
17:06to keep Sartu anaesthetised
17:09while specialist David examines
17:11and addresses any issues with the tiger's teeth.
17:16Was this the one that's got the fracture?
17:18But should there be any concerning signs
17:20that Sartu's health is at risk,
17:23vet Elisa will stop the examination immediately
17:26and the tiger will be returned to its den to recover.
17:30The throat packs out and his pharynx is clean.
17:33Did we take photos, David?
17:34Yes.
17:35Yes, great.
17:35You've got them on?
17:36Yeah, I've got pictures of his teeth, yeah.
17:38Yeah, that's all.
17:38Not his head.
17:39OK.
17:40We don't have to do any treatment on this side.
17:41We just need to take some radiographs.
17:43OK.
17:43OK.
17:45X-ray.
17:46X-ray again.
17:47Just step back a metre and that'll be good.
17:52Oh, so his respiration's got up a tiny bit.
17:55Yeah, oh, that looks good.
17:57Excellent.
17:58His mouth is perfectly fine,
18:00so he's got wonderful oral health for an 18-year-old tiger.
18:03We are done.
18:05Oh, look at you go.
18:06Yeah.
18:07So the rest of the teeth are good?
18:08Yeah, perfect.
18:09That's what we want to hear, David.
18:11While the dental exam has concluded,
18:14the vet team are still performing
18:16their own assessment of the aged tiger.
18:19All right, let's go.
18:21So I'm just taking the opportunity
18:23while he's under anaesthetic
18:24to give him a full, thorough examination.
18:27So I'd like you would take your cat
18:28to the vets once a year for a check-up.
18:30Tiger.
18:31Tiger.
18:32We did find that he's got some arthritis in his joints
18:35and we've had a good look at his foot pads
18:37and we found that his toenails are a little bit long,
18:39his claws.
18:40Look at that one.
18:41Do we need to...
18:41That's got to trim, that one.
18:42That's going into his paw.
18:44So we wouldn't normally cut a tiger's nails.
18:48But we're just noticing
18:49because he's getting a little bit older,
18:51he's not wearing them down
18:52as much like your pet cat does as well.
18:54No-one anticipated a tiger manicure today,
18:57but the team came prepared for anything,
19:01though nailing this part
19:02is a bit more time-consuming than expected.
19:05So we've been monitoring very closely, obviously,
19:08well, the whole time he's been under anaesthetic,
19:10but we've just noticed a couple of little parameters are changing.
19:15CO2's gone up a bit.
19:17His respiration rate's just gone a little down.
19:21He's not taking nice, big, deep breaths.
19:24He is looking a bit paler than before.
19:26How long are we at?
19:28So it's been nearly two and a half.
19:30I think we probably need to quit while we're ahead.
19:34Stretch room must be outside.
19:35I'll grab it.
19:36We've decided the best thing today
19:38is probably just to be grateful
19:40of all the information that we've got.
19:42We've checked his teeth.
19:42We've done all the important things.
19:44We're not going to push it too much.
19:46All right, should we disconnect this?
19:48We're going to get him back straight away
19:49to his enclosure.
19:50One, two, three.
19:53We'll go off that way.
19:55Even though the check-up finished slightly earlier than planned,
20:00this grand old tiger appears to be a picture of health.
20:05All right, I'm giving you three verses.
20:06So I'm going to give him one and a half mils.
20:09One and a half mil.
20:15OK, that can go out.
20:18I'm just going to pull that tube now.
20:20For an 18-year-old cat,
20:23I think he's looking really good.
20:27So that's one tiger down.
20:30Right, folks, if we can get the stretcher carriers, please.
20:33And one to go.
20:34On three.
20:35One, two, three.
20:38Next up is 13-year-old Sakhti.
20:41Recently, keepers have noticed
20:43that he's just having a little bit of trouble eating
20:44and chewing when he eats his food.
20:46So the first thing we're going to do is open his mouth
20:49and just see what's going on.
20:50You can see the tooth is broken off.
20:52It should be as long as the lower one.
20:54And the other side's just as bad.
20:56Oh, gosh.
21:00At Taronga's Wildlife Hospital in Sydney,
21:03the vet team are preparing for a small excursion.
21:07Just make sure you've got surgical prep stuff.
21:10Today, we're going to be anaesthetising a capybara called Carlos,
21:14and we're going to be doing a thorough health check on him.
21:16Vet Adelaide and her team will be examining Carlos from tooth to tail.
21:22Liz McConnell to a capybara keeper.
21:26Go ahead.
21:28Hey, we're just about to leave the hospital.
21:30We're about to do a capybara anaesthetic.
21:32Whereabouts would you like us to part?
21:34You guys are welcome to come up to the den.
21:36Let's be fun.
21:37It's exciting to do a capybara.
21:41Yeah.
21:42Yeah.
21:43So capybaras are unusual because they are a rodent.
21:45I think a lot of people might forget that because of their size.
21:48They're so enormous.
21:51I sort of think of them as almost like giant guinea pigs.
21:54I'm actually allergic to guinea pigs and agoutis, but not capybaras, so...
21:59Oh, well, that's handy for the procedure today.
22:02Yeah.
22:09You want to do him in four?
22:12Yeah.
22:13OK, cool.
22:14This will be the first time Darcy has hand-injected Carlos.
22:18OK, hi, guys.
22:19So I've got the hand-injection for you.
22:22I've popped quite a big needle on here to get through the tough skin.
22:25Yep.
22:26Once he's down, we'll probably just kind of get him comfortable,
22:29pop him on an oxygen mask, and then we'll do his health check.
22:32All right, I'll give you that.
22:34Thank you.
22:36Good luck.
22:38Feeling a little bit nervous about it all.
22:40I've only done one hand-injection before with his brother, Pedro.
22:44Come on, bud.
22:45You can do it.
22:46Can you come down?
22:48He's a bit nervous.
22:49I think he definitely knows something is happening.
22:52Can I grab a couple of the sweet potatoes?
22:55To ensure Carlos the capybara is kept calm,
22:58try saying that fast three times,
23:00Darcy enters the enclosure completely alone
23:03to administer the injection.
23:06Sorry, love.
23:07All Jacob and the rest of the team can do is wait.
23:13Go ahead.
23:15I'm just coming out of the den, so I think I got it.
23:18Cool, good job.
23:21He's just received the injection, which is really, really great.
23:24Darcy did an amazing job.
23:26Now we're just sort of waiting for that medication to take an effect.
23:28The injection, a bit of improvisation, a new spot for Carlos, but he did really well.
23:37And it's not long before the sedative begins to take effect.
23:42Oh, I got him.
23:43He's falling over.
23:44He's falling over?
23:45Yeah.
23:45Naomi, shift to Adelaide.
23:49Go ahead.
23:50Just letting you know Carlos is lying down now.
23:54That's good.
23:55It's now time to transport this giant sleeping rodent
23:59so his check-up can begin.
24:02One, two, three.
24:04Good job.
24:05Okay, we'll bring him in now.
24:06Yep, one, two, three.
24:12At Taronga Western Plains Zoo, 18-year-old Sumatran tiger Satu
24:18is safely back in his den after a successful trip to the dentist.
24:23There we go.
24:25I think his eye position's changed a bit.
24:27Oh, that's a blink.
24:28He blinked, so he's starting to rouse.
24:30That means it's now time for tiger number two.
24:36We are starting a tiger anesthetic.
24:39How you going, big man?
24:41Sakji is 13 years old and recently keepers have noticed
24:45that he's just having a little bit of trouble eating and chewing
24:47when he eats his food.
24:49A tiger's teeth aren't just for chewing.
24:52They're also an important tool for socialisation,
24:55like playing, which means they're used a lot.
24:58They fight with one another or they just rough play with one another
25:02and then they bite, you know, big logs, for example,
25:05and just day-to-day trauma.
25:07All signs indicate that this tiger
25:10is going to need some serious dental work.
25:14What a good, good boy.
25:16Just how serious won't be known
25:19until he's sedated and in the wildlife hospital.
25:23This procedure is going to be longer than Satu
25:27and so we're going to have to be quite strict about anesthetic.
25:32Right, folks, if we can get the stretch of carriers, please.
25:35On three.
25:37One, two, three.
25:40Timeline, we'd really like to be out in three and a half hours.
25:43That's for his safety.
25:44It's not the dental surgery the vet team are most concerned about.
25:48One, two, three.
25:49But rather the length of time, the big cat is under anesthetic.
25:54We're ready?
25:55We can start.
25:55Yep, you go.
25:57And the side effects that can cause.
26:00I'm just organising myself to get ready to an examination of his teeth.
26:05The keepers thought that he might have some broken teeth,
26:07so the first thing we're going to do is open his mouth
26:09and just see what's going on and then we'll work out a plan.
26:12The dental work and the anesthetic time are adding up.
26:42The other side is just as bad.
26:45Absolutely smashed and part of the crown is actually mobile.
26:53In a small pocket of Sydney bushland close to Taronga,
26:59horticulturist Laura has returned to check a termite test trap she set a week ago.
27:06It is a bit of a guessing game.
27:07It is a little experimental.
27:08We haven't done anything like this before.
27:10Laura is hoping to catch, if not 10,000,
27:15then at least a few hundred termites to help feed Taronga's echidna residents.
27:21All right, all right.
27:31Enough of the suspense already.
27:32What have we got?
27:34It doesn't look like we've got any termites in here yet.
27:39Oh.
27:40So this is the first time I've tried setting a trap.
27:43I've had no luck today.
27:45It is experimental, but I'm quite certain with a few more goes, we'll be able to capture some.
27:51Well, it was a nice try, Laura.
27:53Termites have better luck next time.
27:55We've only had the trap set for about a week, so it may take a little bit more time for them to move in and start eating the wood.
28:05As the famous old saying goes, if you can't catch termites in a park, try a bit closer to home.
28:13Oh, something like that.
28:14So I'm just out here looking for some live termites for our echidnas.
28:18Enter Keeper Beck, who joined Laura on the termite trail back at Taronga.
28:24Unfortunately, our horticulture team didn't have any luck in the park.
28:27Maybe Beck to might have better luck.
28:31Oh.
28:31What? A little too much?
28:33OK, I'll let it go.
28:35I've just found this rotten log, hoping there'd be some sort of live invertebrates in there.
28:46Here we go.
28:47And I've just started ripping it up to see if there's anything in here.
28:51Yes, the suspense.
28:54There's other little bugs in there.
28:57OK, OK, but are there any tasty little termites?
29:01Yes, I've just found some termites.
29:03Finally, termites in the house.
29:07What a termite-y result.
29:10Sorry.
29:11The echidnas are going to be very happy about this, so they'll be very excited.
29:15If they're half as excited as I am, it's going to be fun times in the echidna habitat.
29:22Hello.
29:23And stand back, here they come.
29:33They're really enjoying this.
29:41As soon as I brought this in, they all rushed over to have this yummy meal of termites.
29:46You can see Robbie here is getting right into that log, so they're very, very excited.
29:53They're using their strong claws to rip open the log, and then their beak to probe into the rotten areas.
30:00Their very long tongue, which is about 18 centimetres long, to slurp up those termites.
30:04And it's just amazing to watch them doing this natural behaviour.
30:07OK, so just doing some quick maths.
30:12Two echidnas.
30:13That means Laura and Bec only need to find 20,000 more termites tomorrow.
30:19Oof, good luck with that.
30:21Back at Taronga's Wildlife Hospital in Dubbo.
30:27The other side's just as bad.
30:31Sumatran tiger sucked his teeth are much, much worse than expected.
30:40Not a pleasant sight.
30:43Got lots going on.
30:44Lots.
30:46Fractured with a root retained.
30:48Yep.
30:48Fractured with a pulp exposure.
30:50Uh-oh.
30:52Gets worse.
30:54This fourth premolar is totally fractured with a mobile.
30:57Oh, whatever.
30:57Rial as well with the pulp exposed.
30:59Ouch.
30:59That would be really painful.
31:01So there's a lot to do.
31:02A lot to do.
31:03The good news?
31:05Dental specialist David can help Saakty.
31:08The bad news?
31:09It's probably about a six-hour procedure all up, and we don't want to keep him under anaesthetic for that long.
31:14Ideally, we want to be out of here in three and a half.
31:16We don't like to keep tigers or big cats under anaesthetic for more of about three and a half hours just because it increased risk with the potassium levels.
31:24With time against them, the vet team need to prioritise.
31:28The extractions are probably the best thing to do.
31:30I agree.
31:30Because they're the most painful and also they've got all infections.
31:33The countdown is on.
31:35Three hours to remove Saakty's three worst teeth.
31:39We'll just watch his blood pressure.
31:40If his blood pressure's good, we might be able to get away with it.
31:43The first broken tooth...
31:44All right.
31:45Root's coming out.
31:46..is removed in less than an hour.
31:49Yay, got it.
31:51OK, so we've finished taking out the top tooth.
31:54Yeah.
31:54So that's a good start.
31:56Good job.
31:57The lower one, I'm hoping, won't take as long.
32:00No, we haven't had a challenge like this for a while.
32:02I know.
32:03The second broken tooth is proving a lot more difficult.
32:09We've got about five minutes until the three and a half hour mark.
32:12And we need to take away some of the bone on the outside
32:15in order to take the tooth out.
32:19Come on, you can do it, baby.
32:26Wow, good job.
32:27The second tooth is out.
32:30Sakti has now been anaesthetised for three and a half hours,
32:35the time limit they originally set themselves.
32:38But they're far from finished.
32:40Has he still got another bad one on the other side?
32:42Yes, we haven't started that one yet.
32:44Is he responding at all at that end?
32:47Like, anaesthesia-wise, he's happy?
32:49Potassium's 4.8, so we're in the danger zone.
32:52If the tiger's blood potassium levels reach five,
32:56the vet team will have to intervene.
32:59What sort of time do you think on that other tooth, David?
33:03An hour.
33:08At Taronga's capybara habitat in Sydney...
33:12Carlos is lying down now.
33:14Carlos, the capybara,
33:16has just received an anaesthetic injection.
33:19OK, we'll bring him in now.
33:21You're going to bring in a stretcher
33:22because he weighs over 50 kilos.
33:26Good job.
33:27Six-year-old Carlos is getting on a bit.
33:30So much like those two tigers in Dubbo,
33:34he's due for a veterinary check-up.
33:36We're going to bring him inside to the dens.
33:38That way there's a little bit more privacy
33:40and it's a lot more quiet and calm,
33:41so we can give him his health check there.
33:43And then when he's recovering from the anaesthetic,
33:45he'll be able to sort of have a nice, quiet area
33:47that he can wake up in and be nice and calm.
33:50The capybara's health check should be quite quick.
33:54But we might just pop a towel under there.
33:56His temperature's 35.4.
34:00I'm just having a really good feel of all of his joints
34:04and of his feet as well,
34:07just making sure all his digits are moving really well.
34:10We may start to encounter some age-related health issues,
34:15but everything feels really good.
34:18All his joints feel good,
34:20including all his little toes.
34:22So far, so good.
34:24But the biggest issue for the largest rodent in the world is,
34:28you guessed it,
34:29those pearly whites.
34:31So I'm going to have a look in his mouth
34:32and check all his teeth.
34:34That's perfect, yeah.
34:36Let's face it,
34:37it's hard to miss those front chompers,
34:40which for all rodents never stop growing.
34:43But the back teeth are a different story.
34:47Just going to have a look on this up the side.
34:48Compared to a tiger's massive jaw,
34:52Carlos's is a bit more crowded.
34:55They do store a bit of food in their mouths.
34:58It just makes it a bit trickier to properly see the teeth.
35:04And so now that I've scraped that food out,
35:07I can get a really good look
35:08and just make sure there's no hooks or spurs
35:10that might be causing him discomfort.
35:18That all looks good.
35:20Perfect.
35:21His teeth look really good.
35:23But no capybara dental exam is complete
35:25without checking on those hard-to-miss,
35:29giant, razor-sharp, four front teeth.
35:33Beautiful.
35:34That's what we want to see, yeah.
35:36His front teeth are meeting perfectly.
35:38Definitely don't look like there's any problems
35:40we need to address.
35:41I think we're done.
35:42Great.
35:45OK, reversal's been given.
35:47Yep.
35:48Thank you.
35:49A little bit.
35:51Time to wake up, Carlos.
35:52He's very relieved.
35:54He's, you know, getting older,
35:56so it's just nice to know
35:56that everything is going well for him.
35:59Good boy.
36:00And in no time at all,
36:02Carlos the capybara is up and about
36:05as if nothing ever happened.
36:08He's bounced back really quickly.
36:10More importantly,
36:11our relationship hasn't changed
36:13after the hand injection.
36:15I still have really great rapport with him.
36:17He's still coming over for his training sessions
36:19really enthusiastically,
36:21which has been really nice.
36:22So really nice that the hand injection
36:24didn't impact that at all.
36:28What was his potassium?
36:30Well, it's trending up.
36:31It's now 5.2.
36:32Meanwhile, at the Wildlife Hospital in Dubbo...
36:35We're in the danger zone.
36:37Sumatran Tiger Sarktis dental surgery
36:39is running longer than the team hoped
36:42and has become quite complicated.
36:46The general anaesthetic
36:47has caused his blood potassium levels
36:49to rise dangerously high.
36:52Can you just keep your eyeballs on the ECG trace?
36:54Yes.
36:54Is he around?
36:55Oh, his potassium's blown up.
36:57Oh.
36:58Vet Elisa administers a medicated inhaler.
37:02All right, so he's had his puffs.
37:03That can help bring his potassium down.
37:05Although Sarktis time under anaesthetic
37:08is now up,
37:09dental specialist David must finish this last tooth
37:13to avoid complications such as ongoing pain
37:17or infection setting in.
37:19We'll just do a temporary treatment on this tooth.
37:22OK.
37:23So I've taken the piece of fractured tooth off
37:26and taken the nerve out of the tooth
37:28so it's now not going to be a sore
37:30and that should be fine for a few weeks to a month.
37:33So, David, you're done?
37:35We're done.
37:36All right, let's go.
37:37The tiger's procedure is over, at least for today.
37:41There we go.
37:42All right, let's bring the stretcher in.
37:45We'll come back in a couple of months
37:46once Sarktis recovered from this anaesthetic
37:48and we'll do another procedure
37:50where we do root canals on three of his canine teeth.
37:52One, two, three.
37:55One, two, three.
37:57But as Sarktis is being moved...
37:59OK, jump in that middle butt.
38:00..he shows signs that his anaesthetic is wearing off.
38:04And just transporting an animal
38:06that's been under anaesthetic for that long,
38:07it is always a bit of a challenge.
38:09Yeah, they should...
38:09Fingers, everyone.
38:11Well, the intubation...
38:11It's a very fine line,
38:13managing the anaesthetic of these dangerous animals.
38:15Concentrate on getting drugs if we need it.
38:17The team need to keep him sedated
38:19until he is back in his habitat.
38:22Just giving him 10ml of propofol.
38:23So I've just had to give him some top-up drugs
38:26because he was getting a bit too light
38:27for our comfort levels.
38:28But the top-up sedation comes with its own risks.
38:32He's now not breathing.
38:36Quite often when animals are under anaesthetic,
38:38they stop breathing on their own.
38:40It's quite common in big cats,
38:42especially if they've been under anaesthetic for a long time.
38:44While vet Rebecca monitors his vitals,
38:49vet nurse Jodie uses a reservoir bag
38:52to pass oxygen into Sakti's lungs.
38:55For some reason, we're not getting a pulse rate.
38:59Why are we not getting a pulse rate?
39:04You can hear a pulse, Beth?
39:06I can't hear her.
39:08You can't hear it?
39:09Vet Catherine checks for a pulse.
39:16It doesn't feel good.
39:18Huh?
39:18Adrenaline?
39:19Yep.
39:20Yep.
39:20Do what I live.
39:22Adrenaline is used to stimulate
39:24and restart the tiger's heart.
39:27So that adrenaline's in.
39:29Do you want me to jump up?
39:33Yeah, you jump up, Catherine.
39:35I've got a heartbeat.
39:37It's a heartbeat.
39:38You got it now?
39:39That feels heaps better now.
39:43Yeah.
39:45Much stronger.
39:4720 forward.
39:49But we've got no spontaneous breaths?
39:52No.
39:53Sakti needs to be breathing on his own
39:55before the team can return him to his den
39:58and safely remove his tube.
40:01He's not breathing, so that's not going to work.
40:07Next.
40:07That rate's 100.
40:08It's one step forward.
40:10It looks like he might be stabilising.
40:12And two steps back for Sakti.
40:14Pulse quality is not good.
40:16Can you listen to the heart while I do this?
40:17Yep.
40:19We've got no spontaneous breaths.
40:22At Taronga Western Plains Zoo,
40:24Sakti the Sumatran tiger is in crisis.
40:28He's not breathing, so that's not going to work.
40:30His heart stopped beating while under sedation.
40:33I can't hear a heart rate.
40:35It's now been restarted,
40:37but the tiger still can't breathe on his own.
40:42Quite often, the anaesthetic depresses their respiratory system
40:45and we'll often have to ventilate for them.
40:47I'll just keep him on 3%.
40:49How's his pulse up?
40:49What's going?
40:5070.
40:5170.
40:52Yep, so that's not too bad.
40:53And so we were making sure that we were giving him
40:55enough oxygen through his system.
40:57Just keep bagging.
40:58Keep bagging.
40:59Heart rate's now increasing.
41:01It's going back to 73.
41:0282.
41:03It's getting faster.
41:0590.
41:07Heart rate's 100.
41:09Suddenly, the tiger's heart starts beating erratically.
41:14122 here.
41:15He's getting tachycardic.
41:16Heart rate's got an arrhythmia.
41:18Pulse quality is not good.
41:19No.
41:20He's gone into like a B-TAC.
41:22The fast, irregular heart rate
41:24is a sign the tiger could go into cardiac arrest again.
41:29Just keep ventilating, I think.
41:30I'm stirring up another adrenaline.
41:33His pulse is very erratic.
41:36Can you get some calcium gluconate into him?
41:3860 ml.
41:39Can you listen to the heart while I do this?
41:41Yep.
41:44Any reflexes up there?
41:46Sakti's life is on a knife's edge.
41:49He was central before.
41:51Not like this.
41:52It's different.
42:00Rhythm's better.
42:02It's a normal rhythm.
42:03Heart rate's 100.
42:06Pulse feels better.
42:07The combination of drugs will help stabilise his heart.
42:11We've got spontaneous breathing.
42:13He's spontaneous breathing.
42:15Heart rate's about 84.
42:16It looks like he might be stabilising, so...
42:18That's a nice, regular rhythm.
42:22His heart rate's nice and steady now.
42:23It's a really good rhythm.
42:25Yeah, colour's better than it was.
42:26It's not as good as it was, but it's better than it was.
42:29The best thing we can do for him is get him in there
42:30and get him off all the drugs.
42:32Yeah, we have to wake him up.
42:34Guys, we've...
42:35We're going to move him.
42:37We've stabilised him more than he was.
42:40He's not particularly stable.
42:42Anything can happen.
42:43The sooner they give Sakti the anaesthesia reversal drug...
42:47Catherine's got the reversal.
42:49..the better his chances of a full recovery.
42:52Close to the door.
42:54We'll just give him a half dose.
42:57Ready for reversal?
42:58Yep.
43:01It's now a waiting game to see if Sakti wakes up.
43:12Come on, dude.
43:13Come on, buddy.
43:14He certainly did give us all a little bit of a fright
43:16on the way back today,
43:18especially after we'd invested so many hours
43:20into trying to give him a good bill of health
43:22and look after those teeth.
43:23He stopped breathing,
43:24and for a minute there we lost his heart.
43:27And it looked a little bit dire for a while there.
43:29We were all quite nervous.
43:31But when he took the breath on his own
43:33and started to wake up,
43:34it was a huge relief for us all.
43:37Did you see that?
43:38Oh, good morning.
43:39It kind of.
43:39You just opened his eyes?
43:40Yeah.
43:41So we're incredibly relieved
43:42that he's come through this well.
43:44Nice.
43:44Nice.
43:45Thank you.
43:47Thankfully now he's stable,
43:49he's recovering,
43:50and I'm sure we'll have a good night's sleep tonight.
43:52And the next morning,
44:00just as the doctor ordered,
44:02Sakti is looking like his old self again.
44:05Though I don't think he or Sartu
44:08will be racing back to the dentist
44:10any time soon.
44:12How's it tonight?
44:23And that's what I'll do.
44:24We're going to do this again now.
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