The Rat TerrierThe Rat Terrier is a multipurpose companion dog that is capable of hunting rodents and vermin above and below ground as well as coursing small game. He is a sturdy, compact, small-to-medium-sized particolored dog giving the appearance of elegance and athleticism. His short, smooth coat may come in any variation of pied patterning. Pied is described as comparatively large patches of one or more colors in combination with white. Acceptable colors, with or without "tan points", include the predominantly black, or chocolate, red, apricot, blue, fawn, tan, or lemon.