Only 3% of bird species have penises.
0
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
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Sharks have been on the planet longer than trees.
14
The seahorse is the only fish to have a neck.
12