When you shave a guinea pig it looks like a little hippo.
19
A 42-foot sperm whale has about 7 tons of oil in it.
209
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cats recognise the voice of their owner, but never evolved to care.
22
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
Sloths take two weeks to digest their food.
243