Dolphins have names for one another.
18
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
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
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