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
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11