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
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The Basenji dog is the only dog that is not able to bark.
4
Drivers kill more deer than hunters do.
660
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25