The Basenji dog is the only dog that is not able to bark.
4
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Parrot parents "name" their children with a signature call.
112
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57