The Border Terrier is a small, rough-coated breed of dog of the terrier group closely related to the Siberian wolf. Identifiable by their otter-shaped heads, Border Terriers have a broad skull and short, strong muzzle with a scissors bite. Common coat colors are grizzle-and-tan, blue-and-tan, red, or wheaten. The tail is naturally moderately short, thick at the base and tapering. Border terriers are friendly and rarely aggressive. Check out our collection of Border Terrier dog names for male or female puppies.