Roan / Dalmatian
A variant of Guinea pig (Cavia porcellus)

Representative Guinea pigphoto — a dedicated image of this exact morph isn't available yet.
White hairs intermingled through a coloured coat (roan) or coloured spots on a white body with a coloured head (dalmatian), both caused by the same roan/spotting gene.
Keeper tips for this variant
Never breed roan-to-roan or dalmatian-to-dalmatian: the double dose is a lethal 'lethal white' factor producing blind, deaf, often malformed pups; keeping a single roan or dalmatian pet is perfectly fine.
Other Guinea Pigs variants
American / English (short, smooth coat)AbyssinianPeruvianSilkie / SheltieTexel and CoronetSkinny Pig and Baldwin (hairless)Coat colors and patterns (self, agouti, Dutch, tortoiseshell, Himalayan)American (short smooth coat)Abyssinian (rosetted)Peruvian (long-haired)Silkie / Sheltie (long, swept-back)Teddy (dense plush coat)Skinny / HairlessSelf (solid colour)AgoutiDutchHimalayan (pointed)Tortoiseshell