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
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A 42-foot sperm whale has about 7 tons of oil in it.
209
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13