Leafia, or Leafeon, as this Pocket Monster is more well known as, is Eevee's Grass evolution from the 4th Generation. You can obtain one of these adorable Pokémon from levelling up your Eevee at Moss Rock, in Hakutai Forest.
They show resemblence to a cat or a fox, much like the other Eeveelutions. Some even believe they show resemblence to dogs as well. They have a cream body, with little brown socks at the paws. The tail is more of a leaf, as are the ears. Little tufts of leaves poke out around the lower neck and the legs. There is also a frilly leaf on the head, with brown inserts to match the brown eyes.