00:00We're a nation of dog lovers.
00:02How big a friend is he to you?
00:04I love him.
00:04But with our busy 21st century lifestyles,
00:08five million dogs are regularly being left home alone.
00:11We ate through this cable here.
00:13My neighbours say that they could hear howling.
00:15Mark Evans investigates what our pooches get up to in private.
00:20I feel really good for you to see that.
00:22And draws on cutting-edge science...
00:24The right side of the brain in dogs is associated with negative emotions.
00:28..to keep your hound happy...
00:30This is treatable.
00:31..when they're alone.
00:33Check this out. Dog TV.
00:36Dogs. Their secret lives. Monday at 8 on 4.