There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
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
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
The seahorse is the only fish to have a neck.
12
A puppy is born blind, deaf, and toothless.
16