One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
Sharks have been on the planet longer than trees.
14
Alligators can live up to 100 years.
337
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20