Cats recognise the voice of their owner, but never evolved to care.
22
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
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Dogs have been man's pet for over 14,000 years.
224
Alligators can live up to 100 years.
337
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
