One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
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
Two dogs were among the Titanic survivors.
262
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27