Wartortle (Japanese: カメール Kameeru) is a  water-type Pokemon introduced in Generation I. It is the evolved form of Squirtle. 

Physiology

  Wartortle are small, bipedal, turtle-like Pokémon with a similar appearance to that of their pre-evolved form, Squirtle. Some differences are that Wartortle have developed sharper and larger claws and teeth. Their tails are larger and fluffier than Squirtle's. The fur on Wartortle's tail darkens with age. Wartortle have developed large furry ears. Like its pre-evolve form, it can also use its shell to protect itself. Its shell bears the scratches of many battles. 

Natural Abilities

  Wartortle is naturally able to shoot water from its mouth at a greater force than its pre-evolved form Squirtle.