Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
A dork is a whale's penis.
327
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Jumping fleas can accelerate 50 times faster than the space shuttle.
218