Generation Vii
Fluffy
Halves the damage taken from moves that make direct contact, but doubles that of Fire-type moves.
Detailed Effect
Damage from contact moves is halved. Damage from Fire moves is doubled.
Pokémon With Fluffy
6 canonical Pokémon forms can have this Ability.

Stufful 
Bewear
Wooloo
Dubwool
Greavard
Houndstone