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
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The octopus does not have a blind spot.
273