A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
A group of kittens is called a "kindle".
10
A cow produces around 200,000 glasses of milk in her lifetime.
373
Gorillas can catch human colds and other illnesses.
205