Dolphins have names for one another.
18
Whales and dolphins can't taste anything other than salt.
11
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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