Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
There's a rare breed of pig that looks like a sheep.
14
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
Penguins have a gland above their eye that turns saltwater into freshwater.
12
A lion in the wild usually makes no more than twenty kills a year.
186
Early American humans hunted car-size armadillos and used their shells for houses.
12
Two dogs were among the Titanic survivors.
262