There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
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
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Sloths take two weeks to digest their food.
243
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
The seahorse is the only fish to have a neck.
12
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12