When cats are happy, they may squeeze their eyes shut.
10
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
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
A dork is a whale's penis.
327