Mightyena, the Bite Pokémon. Mightyena is the evolved form of Poochyena. They move primarily in packs, working together to capture their prey.
– Ash’s Pokedex
Mightyena is based on a hyena or a wolf. I remember fighting a lot of them playing Emerald, ’cause Team Aqua and Magma like using them. I would just send out Hariyama, and Fake Out usually did a lot of damage.
It can get the ability Intimidate, or Moxie from the Dream World. Stat-wise, it has good Attack and Speed.