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00:02All over the world, species clash.
00:06In nature's savage battle of survival.
00:11On the open plains.
00:13In mountain forests.
00:16And city streets.
00:19All are locked in deadly conflict.
00:23Animals fight tooth and claw to win food, territory, and rights to the bloodline.
00:32From the Mediterranean shores to the Canadian wilderness.
00:37There are no rules.
00:40This is Animal Fight Club.
00:50In the battle of the sexes.
00:53Males can be stronger.
00:56But when it comes to the bloodline.
00:59Females hold the power.
01:08In the high forests of Rwanda.
01:13Mountain gorillas walk a fine line between peace.
01:18And war.
01:26With plenty of food.
01:28Fights usually erupt over females.
01:32And this local troop.
01:34Has a battle brewing.
01:38Males from a neighboring band are after their females.
01:45But the dominant male.
01:47The silverback.
01:48Gives a warning.
01:54The group flees.
01:57And a dangerous battle is avoided.
02:07Gorillas choose their fights carefully.
02:12Because when these powerhouses duke it out.
02:18The damage can be devastating.
02:28Gorillas eat roots.
02:32Fruits.
02:34And tree bark.
02:36But their colossal power and bulk.
02:42Is thanks to an incredible super powered gut.
02:48Gorillas can consume over 10% of their body weight.
02:52In vegetation a day.
02:55Their enlarged colons.
02:57Are far more efficient than ours.
02:59At processing plant fiber.
03:01To produce power building energy.
03:06While we can't digest plant cellulose at all.
03:08A gorilla's colon.
03:10Contains a bacteria.
03:12That breaks it down.
03:13Converting it into energy.
03:17With so much raw power.
03:20Diplomacy is critical.
03:23But another battle over mating.
03:25Threatens to erupt.
03:28Females sometimes transfer between groups.
03:32A behavior that guards against interbreeding.
03:38An outsider mother.
03:40And her three year old.
03:43Arrive from another troop.
03:47A male's harem.
03:49Is limited to three adult females.
03:53So to the ladies.
03:55This newcomer.
03:56Is a threat.
04:00A dominant female.
04:01Takes the lead.
04:11Urinating is an involuntary fight or flight response.
04:16A clear sign that the dominant female is serious.
04:20A clear sign that the dominant female is serious.
04:23The newcomer can't back down.
04:26She must earn her place.
04:36Behind the females, a male's pig grunts mean he's angry.
04:45A firm hand splits the pair, but the silverback strong arms him.
04:59He wants the females to settle this themselves.
05:10The newcomer asserts herself, the long-timer retreats, but has the last word.
05:30The newcomer may not win over her rival, but earns approval from the silverback.
05:37And secures safety for her and her child, at the cost of just a few bruised egos.
05:48When males clash over territory, the outcome is rarely amicable.
06:00A pair of waterbuck wages war.
06:05This landowner caught a young buck gatecrashing his territory.
06:12Time for a hard lesson in waterbuck etiquette.
06:20Waterbuck love water.
06:24They emit an oily, smelly secretion that waterproofs their shaggy coat.
06:31When threatened, they head where few predators will follow.
06:37An effective tactic.
06:41Unless they're up against another waterbuck.
06:49Brutally battered, the buck is on death row.
06:57But the landowner stops.
07:01Danger is in the air.
07:12To a lion, the sound and smell of fighting waterbuck are like a dinner bell.
07:21Expert hunters, lions work in small teams to separate a beast from the herd.
07:36Today's prey is a sitting duck.
07:42The 12 strong pride surrounds him.
07:47Fishing waterbuck from ponds doesn't seem to be in the lion's hunting handbook.
07:55The waterbuck sees a gap.
08:00A lioness strikes.
08:06On dry land, she'll haul her prey to ground.
08:11But here, she clings on.
08:25A lioness moves in for the kill.
08:33But the youngster refuses to give in.
08:36He plunges a lion's face beneath the water.
08:41Unable to breathe, she releases her grip.
08:53But the waterbuck makes a fatal mistake.
08:58Water is his turf.
09:01Land is theirs.
09:07When a pack of hungry lions invite you to dinner, it's an offer you can't refuse.
09:19While many animals fight for the chance to mate, cuttlefish save some of their fiercest battles for afterwards.
09:39Living just 18 months, cuttlefish have only one mating season.
09:47So it's time for some fast love.
09:52Romeo finds his Juliet.
09:57Sophisticated cells let him change his skin to display vibrant zebra stripes.
10:06It's how cuttlefish declare their love.
10:12The mating begins, face to face.
10:19A male takes sperm with his enlarged fourth arm and inserts it into the female.
10:28Soon, she'll lay her eggs.
10:32And shortly after, the pair will die.
10:39Until then, Romeo will guard her.
10:44Because a fertile female can quickly gather attention.
10:50A handoff tells an intruder that Juliet is taken.
10:56This rival could replace Romeo's sperm with his own.
11:02Romeo isn't going to let anyone trash his bloodline.
11:07He's got a deadly move that could save the day.
11:16A rival makes a move on Romeo's Juliet.
11:22Cuttlefish have just one short season to extend their bloodline.
11:35Romeo makes his skin dark and squirts an inky cloud.
11:43Ink is made in the ink gland before it's released into the ink sack.
11:48When threatened, a muscular contraction forces it through the funnel.
11:56Containing the dark pigment melanin, the ink acts as a smokescreen.
12:02The cuttlefish can also mix the ink with mucus to create pseudomorphs.
12:07Smaller, cuttlefish-sized clouds, which act as a perfect predator decoy.
12:18The rival's zebra stripes make his intentions loud and clear.
12:23But Romeo won't give up on his Juliet.
12:32His next defense is Jet Propel.
12:45He sucks water through apertures at the side of his head into his mantle cavity.
12:51He then contracts the muscles quickly to force the water through the funnel.
12:57This pushes him rapidly in the opposite direction.
13:01Moving the funnel lets him quickly change his course, so he can outmaneuver enemies.
13:13In the panic, the rival grabs Juliet.
13:19Cuttlefish arms are lined with suckers, which they use to secure their prey and drag them towards their pointed beaks.
13:27This love story is now a horror movie.
13:33Juliet breaks free.
13:36Patience tested, Romeo explodes.
13:46He corkscrews his rival with a triple barrel roll.
13:53Dazed and defeated, the rival's hunt for a mate continues elsewhere.
14:00Reunited, Romeo and Juliet's struggle is far from over.
14:06Laying eggs is their next challenge.
14:08And their final one.
14:16When a beast loses the final battle, his flesh becomes a beast worth fighting for.
14:28A dead hippo is way past its expiration date.
14:34Notorious scavengers, hyenas are not fussy eaters.
14:42They live in large packs.
14:46And eat anything.
14:51And everything.
14:54Skin, hair, teeth.
14:58Their bone-crunching jaws even let them feast on nourishing marrow.
15:07A rotting hippo creates a big stink.
15:13A hungry warrior locks on to the scent.
15:19Called by some the most fearless animal in the world,
15:25honey badgers are 10-inch tall powerhouses.
15:31They pack long, sharp claws.
15:35And a savage bite.
15:42These stocky beasts prey on anything.
15:46Even killer snakes.
15:51But when food is scarce, he'll turn scavenger.
15:59The honey badger spots the clan.
16:03No amount of hippo is worth taking on a pack of hyenas.
16:08But it's too late.
16:12He's been spotted.
16:16A rotting hippo carcass attracts a pack of hyenas.
16:22But they'd sooner feast on fresh honey badger.
16:30He can't outrun them.
16:34But he can fight nasty.
16:39Leg cocked, he unleashes his secret weapon.
16:45A stomach-churning liquid sprayed from his anal glands.
16:52Then he pulls the dirtiest move in the book.
16:58He bites a hyena's genitals.
17:02Once bitten.
17:04Twice shy.
17:06No meal is worth the crown jewels.
17:11The honey badger makes a break.
17:14With the pack on his heels.
17:19Things don't look good.
17:23But grit pays off.
17:27For the honey badger, three tons of hippo wasn't worth the fight.
17:34But for hyenas, nothing's past its use-by date.
17:44When food is scarce, the scavengers will do anything to survive.
17:52A clan stumbles on a pair of lionesses enjoying fresh buffalo.
17:57Much tastier than rotting hippo.
18:02Hyenas and lions are both apex predators.
18:05And mortal enemies.
18:13They hunt the same prey.
18:17They hunt the same prey.
18:18Scavenge the same remains.
18:23And slaughter each other's young.
18:28A fresh kill will see these rivals compete for calories.
18:37The hyenas may outnumber the lions five to two.
18:44But caution is key.
18:49Other members of the 80-strong clan have come across a lone lioness.
18:55And this time, the numbers favor them.
19:02If they banish her, there'll be less competition for nearby prey.
19:07And if they kill her, she could be dinner.
19:17Mobbing with loud cries is a risky scare tactic.
19:21The clan has numbers, but the lioness is stronger.
19:34The clan gains confidence.
19:46Hyenas fight with razor-sharp teeth.
19:50But so does she.
20:01But so does she.
20:05One bite to a hyena's neck can kill.
20:14But the clan target her haunches.
20:18Their carnassials shear straight through flesh.
20:24Staring 12 kinds of death in the face.
20:29Flight wins out over fight.
20:42As the frustrated hyenas give up,
20:47the lioness strikes gold.
20:51A leopard's treetop stash.
20:55Even a discarded head yields life-giving protein.
21:01And she should know.
21:03This famed predator scavenges more than the lowly hyena.
21:19Some Native Americans believe that seeing the elusive wolverine is a sign of good fortune.
21:28But not if you're a rival wolverine.
21:33They'll stop at nothing to protect their turf.
21:38A wolverine's jagged teeth.
21:42Can slice off their rival's scalps.
21:52Wolverines don't hibernate in the winter.
21:57They tough it out.
22:02Finding food.
22:06By fair means.
22:09Or foul.
22:12The scavenger hits the jackpot.
22:16His highly developed sense of smell picks out flesh buried deep in the snow.
22:24But a moose carcass out in the open is 1,800 pounds of easy booty.
22:33Except...
22:33There's a thief about.
22:36A rival wolverine.
22:39A moose is more than enough meat for two.
22:42But the latin name for wolverine is glutton.
22:47And neither of these guys wants to share.
22:52When wolverines wage war.
22:55They go in armed to the teeth.
23:00Over generations, wolverines were born with a genetic anomaly.
23:06Fewer teeth.
23:08This allowed their descendants to develop larger carnassials.
23:13Which were more efficient at hacking through frozen meat.
23:18Wolverine's upper molar teeth are rotated 90 degrees.
23:24Hourglass in shape.
23:26With well developed shearing blades.
23:28They can crush bones.
23:37The thief unleashes a scratch attack.
23:45Unlike the X-Man.
23:48Wolverines can't retract their lethal claws.
23:52The thief sinks those flesh shredding teeth into the scavenger's hand.
23:57One false move.
23:59And the scavenger loses more than his dinner.
24:03He could be scalped.
24:10Battling over a moose carcass.
24:12A wolverine thief locks his teeth on the owner's scalp.
24:18But the scavenger twists himself free.
24:22The thief counters with another twist.
24:28This violent motion can be used to dismember an opponent.
24:39The scavenger quits while he still can.
24:43With his scalp in one piece.
24:48The thief chows down.
24:52Food tastes better when you've worked up an appetite.
25:01The only thing that bites harder than Yellowstone's winter.
25:06Is the grizzly.
25:10Time's running out for this bear.
25:14He needs to pile on the pounds for his five-month hibernation.
25:21By foraging.
25:24Or hunting.
25:27Grizzlies are one of the largest land-based carnivores.
25:31But fighting over a fish.
25:35Is high on effort.
25:37Low on calories.
25:40Our bear finds a bison carcass.
25:44Pounds of chow without the fight.
25:48To mark his claim.
25:50He leaves his bear stink on a nearby tree.
25:57Back scratching is a grizzly's keep out sign.
26:01A strong scent lets neighboring bears know to steer clear.
26:07But this bear wasn't the first one to find the carcass.
26:12He was.
26:15And he's not happy that someone is eating his bison.
26:22The owner attacks.
26:25He launches 600 pounds of teeth, claws and muscle at the thief.
26:30The grizzly is one of the most powerful large carnivores.
26:35His distinctive shoulder hump is a mass of muscle.
26:39That helps power his strong front legs when digging for food.
26:45In combat.
26:46This gives him the fighting strength of up to five grown men.
26:57Battling grizzlies can kill.
27:05The thief gains the higher ground.
27:16But the owner fights for what's rightfully his.
27:19But the owner fights for what's rightfully his.
27:20He uses the bank to power the thief.
27:25Into the freezing waters.
27:36The thief rears up in defiance.
27:40But the owner takes the victory.
27:43He turns his back to let the thief know who's the boss.
27:49The thief's free lunch proved too good to be true.
27:54With winter settling in, he should be saving energy, not wasting it.
28:05Nothing is as fierce as a mother fighting for her young.
28:18India's Satpura Hills.
28:22Away from her herd's protection, a female gaur nurses a newborn calf.
28:31But the pair is not alone.
28:35Wild dogs are nearby.
28:37And they're hungry.
28:41Gaur are wild cattle goliaths.
28:45Bigger than their bison and buffalo cousins.
28:52During the mating season, male gaur lock horns with ferocious power.
28:59Nearby, Indian wild dogs, or dole, get their strength through numbers.
29:08These ruthless assassins run in packs.
29:12And use killer tactics.
29:15Against a mother 40 times heavier than them.
29:21The wild dogs turn to guerrilla warfare.
29:26Having carried him for nine months,
29:29there's no way mom's going to let her precious child become dog food.
29:40Indian wild dogs prey on the weak.
29:45They single out a newborn gaur.
29:49The calf dives for his mother's protection.
29:52But her eyes are on the bandits.
30:03The pack coordinates its attack with whistles and clucks.
30:09As soon as the mother fends off one bandit,
30:12others swoop from the opposite direction.
30:17Dole stagger their assault to allow rest between attacks.
30:30And disembowel their prey while they're still alive.
30:39Mom's strength and size are useless against the swarming tormentors.
30:43They're just too quick for her advances.
30:50The calf goes into shock.
30:52He's breathing.
30:53But only just.
30:56Adding further insult, the bandits torment the distraught mother.
31:10The assault rages for over 15 minutes.
31:15And the calf's cries stop.
31:26Feeding their hunger, many overpowers might.
31:32The mother spent just two short days with her calf.
31:37She'll have others.
31:38But today she returns to the herd alone.
31:47In the battle for survival,
31:50surprise can be the greatest weapon.
32:00Fiercely territorial,
32:01Caperkale roosters are the original angry birds.
32:07When the red mist drops,
32:09they attack anything and anyone.
32:15The main predators to worry these kamikaze cockerels
32:19are red foxes and raptors.
32:24This rooster is king of all he surveys.
32:30Fan tail feathers declare his fertility,
32:33along with his harem of hens.
32:38But someone wants his crown.
32:44The king makes his displeasure known.
32:49But his enemy wants a mate.
32:52And he's prepared to fight.
32:55Neck feathers puff up to intimidate.
33:01But kings don't scare easy.
33:07Caperkale's pack a deadly peck.
33:10Battles can decapitate.
33:17Blows from their powerful wings echo around the forest.
33:25The warriors know that one slip could be fatal.
33:30They mustn't lose focus.
33:33But neither sees the next attack coming.
33:46Golden eagles dive at 200 miles per hour.
33:49And strike with ruthless efficiency.
33:53These airborne assassins know no bounds.
33:57Readily sinking their powerful talons into beasts twice their size.
34:03A Caperkale makes for an easy meal.
34:15The king's enemy has been dealt with.
34:19But he doesn't walk away.
34:23He confuses the golden eagle for a rival.
34:29The predator just wants to enjoy his meal.
34:34Fat chance.
34:42Oblivious to the eagle's power, the king tests his patience.
34:52A Caperkale will do anything to defend its terrain.
35:02The king pays the ultimate price.
35:09Two roosters is more than one eagle can eat.
35:14The king is left to the flies.
35:23The urban jungle.
35:27Stalking our sewers.
35:30And subways.
35:38The brown rat survives on what others leave behind.
35:47But the hunt for food can take you into the wrong neighborhood.
35:54Squaring up to a predator 30 times your weight would send most running.
36:03But packing a host of combat skills.
36:07Rats fight like ninjas.
36:11They box.
36:13Wrestle.
36:15And pack a powerful bite.
36:24Rats jaw muscles give them a strong bite for their body size.
36:29One pair of muscles even loops through the eye sockets, forcing the eyes to bulge as they gnaw.
36:37Their four incisors are made of soft dentin and hard enamel.
36:43The dentin wears faster than the enamel, creating a razor sharp edge.
36:50Rats teeth never stop growing.
36:52So unless he frequently gnaws, they'll spiral round, eventually filling his mouth.
37:01A decisive hold takes the victory.
37:04An even fight, fairly fought.
37:09But rat versus cat?
37:12The odds are in the feline's favor.
37:18Like their big cat cousins, the kitty cat packs serious combat smarts.
37:24Fast and agile, they can leap five times their own height.
37:28They have sharp, retractable claws, perfect for pinning down prey.
37:34And to complete the kill, 30 flesh-shredding teeth, built for eating meat.
37:44The warriors square off.
37:50Tackling just one of these killers is unthinkable.
37:54And this puss has backup.
38:03Like their big cat cousins, domestic cats are ruthless killers.
38:08So the odds look long for this rat.
38:18A flying leap, claws outstretched, sends Lucky running for cover.
38:25And Ratty's not stopping at the leader.
38:29He takes on the whole gang.
38:45Not a kid.
38:46Cat's stalk prey with stealth.
38:50But rat's eyes are at the side of their head for incredible peripheral vision.
39:03Lucky backs the rat into a corner.
39:06This must be game over.
39:10Not for this little squeaker.
39:15Outmaneuvered and outclassed, Lucky throws in the towel.
39:20His next meal will come out of a can.
39:24The rat will fight for his.
39:31In the American Southwest, water is life.
39:41But finding it is murder.
39:48The thermometer here can top 125.
39:54And this roadrunner is thirsty.
39:58He can get most of his water from the meat of prey.
40:06His stubby wings make flying clumsy.
40:11But he can run down his victims at almost 20 miles per hour.
40:16This fleet-footed hunter spies another speed demon.
40:26A rattlesnake.
40:29A dead snake is a water-filled feast.
40:36But a live one is as quick as a whip.
40:42The legendary rattle, made from interlocking segments of keratin, is used to warn off potential predators.
40:51And if the warning doesn't work, America's most dangerous snake can strike at over 14 feet per second.
41:01But it's what's in the fangs that causes the damage.
41:07As his jaws widen, hinged fangs extend forward from the roof of his mouth.
41:13Before being plunged deep into his prey, the venom gland above the upper jaw compresses,
41:20and pushes the deadly liquid along the venom duct through hollow channels in the fangs.
41:27The contents of the venom depends on the snake's location.
41:35Some use neurotoxins to paralyze their prey.
41:39Others use hemotoxins to starve animals' blood cells of oxygen.
41:46While some have a lethal cocktail of both.
41:57The roadrunners know birdbrain.
42:02They'll rarely tackle a rattler over two feet long.
42:09But there's a youngster nearby.
42:13Less water, but seemingly less risk.
42:19But even a young rattler's venom could kill a roadrunner.
42:27So the bird dances with a mini-murderer.
42:39Like a matador with his cape, the roadrunner uses his wings to divert the rattler's strike.
42:54With up to 15,000 muscles, the snake strikes faster than a human can blink.
43:03But it's not enough to bag a roadrunner.
43:06Sensing defeat, the rattler retreats.
43:10The bird seizes his chance by seizing the snake.
43:18Grabbing behind the head prevents the rattler unleashing its deadly venom.
43:27Known to the locals as the snake bird,
43:31The roadrunner's assault doesn't just kill.
43:36Crushing bones makes the water-filled snake easier to swallow.
43:41Venom gland and all.
43:46Thank you very much.
43:47The world has brought a chance for our enemies per second.
43:47To the right is it.
43:47If you want to continue to walk you for your enemies per second,
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