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
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Giant Anteaters' front legs look like a panda.
48
A group of kittens is called a "kindle".
10
The seahorse is the only fish to have a neck.
12