The Basenji dog is the only dog that is not able to bark.
4
The colossal squid has the largest eyes in the world.
4
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
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 reindeer is the only mammal that can see UV light.
17
A dork is a whale's penis.
327