Sharks have been on the planet longer than trees.
14
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Cats recognise the voice of their owner, but never evolved to care.
22
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Sharks, like other fish, have their reproductive organs in their chests.
248
Drivers kill more deer than hunters do.
660