The Basenji dog is the only dog that is not able to bark.
4
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
A dork is a whale's penis.
327
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4