A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The oldest recorded elephant lived for 82 years.
213
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
Sharks, like other fish, have their reproductive organs in their chests.
248
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57