What animal is the Pokemon mew?

It is designed...
...as a pink, feline-esque Pokémon with large eyes and a long, thin tail that broadens at the end. Its skin is covered with a layer of short, fine hair. Its DNA combines the genetic composition of all existing Pokémon species; the game describes it as being the single ancestor of all other Pokémon. It is shy and rarely seen by humans.Though it loves to play and can be a little silly it actually resembles a cat mostly.

- Wikipedia