11 Of The Most Bizarre Animal Mating Behaviours In The World

Penis Chewing

Banana slugs are the world's second largest species of slugs; they are also hermaphrodites! These slugs typically live in damp forests and eat a variety of foods, including animal waste, plants, rotting fruits, and other banana slugs. They begin their mating ritual by releasing a slime containing an active pheromone, which lets other slugs know they are ready for copulation. Interested mates eat the slime, and when they are ready to reproduce, the slugs mutually insert their penises, which grow out of their heads and are as long as their bodies, into each other. After mating, they are known to chew their penises off.