Coat and Color: Double coated with a wiry outer; wide range of colors (no white markings); most commonly encountered shades are black, product and grey, typically with a brindle blend The animal shelter or pet store where you find your guinea pigs really should be capable of let you know https://ituneplay.com/view/post/Dog-Chewing-Paws--Symptom--Causes--and-Prevention/265