Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
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
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250