Dogs sometimes fake being sick to get attention.
26
A 42-foot sperm whale has about 7 tons of oil in it.
209
Cats recognise the voice of their owner, but never evolved to care.
22
Cows can sleep standing up, but they can only dream lying down.
745
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Sloths take two weeks to digest their food.
243