Sheep, goats, octopuses, and toads have rectangular pupils.
7
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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27