This Pokémon has a gorilla-like appearance. Slaking are large, bulky, ape like Pokémon. They have a white collar of fur around their necks, and pig-like nose. The rest of their body is brown but its hands, feet, and stomach are a lighter brown.
It has the ability Truant, which lets it attack every other turn, however, its superb stats (Attack and Speed especially) more than make up for this drawback. While this Pokémon doesn't appear to do much most of the time, it has immense physical strength, stamina and, surprisingly, enough speed. Much like other normal types, it can be taught quite a number of elemental attacks. It has the highest stats of any non-legendary Pokémon.
Slaking is the evolved form of Vigoroth once level 36 is reached. It is the final form of Slakoth.
In the anime, May's father, Norman, has owned a Slaking, and it is first seen in Love, Petalburg Style! where it was called by an angered Norman after Team Rocket and their Pokémon ruined his surprise gift for his wife, Caroline. He immediately orders Slaking to blasts Team Rocket off with a powerful Focus Punch. In the following episode, Ash's Grovyle defeats it, earning Ash the Balance Badge.
In the XY series, Sawyer also owns a Slaking and it was used during the Lumiose Conference and his Pokemon relies on countering the opponent with its powerful offensive moves. As Norman's Slaking is much stronger than Sawyer's when they offensively attack the opponent.