Pokemon Black and White Pokedex - Purrloin, Liepard

Purrloin (チョロネコ Choroneko)
#015 Unova / #509 National
Type: Dark
Species classification: Devious Pokemon
Abilities:
Limber – Cannot be Paralyzed
Unburden – Doubles Speed after user consumes held item
Dream World abilities: Mischievous Heart – Non-damaging moves get higher priority
Location found (Black/White): Routes 2 and 3, Dreamyard
Wild hold items: None
Egg groups: Ground
Capture rate: 255
Gender ratio: 50/50
Effort values: 1 Speed
Evolution family: Purrloin > Liepard at level 20

A favorite of Team Plasma, Purrloin and its evolution Liepard are a handsome Dark-type pair, although their stats aren't anything too special.