There are approximately three chickens for every human on Earth.
13
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cats sleep for 70% of their lives.
8
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
The reindeer is the only mammal that can see UV light.
17
Sharks have been on the planet longer than trees.
14