A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
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
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12