There's a rare breed of pig that looks like a sheep.
14
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A puppy is born blind, deaf, and toothless.
16
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 oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492