Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Two dogs were among the Titanic survivors.
262
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2