Appearance Terriers range greatly in appearance from very small, light bodied, smooth coated dogs such as the English Toy Terrier (Black and Tan), which weighs as little as , to the very large rough-coated Airedale Terriers, which can be up to or more. As of 2004, the United Kennel Club recognized a new hairless breed of terrier derived from the Rat Terrier called the American Hairless Terrier.
appearance terriers range greatly in appearance from very small light bodied smooth coated dogs such as the english toy terrier (black and tan) which weighs as little as  to the very large rough-coated airedale terriers which can be up to or more as of 2004 the united kennel club recognized a new hairless breed of terrier derived from the rat terrier called the american hairless terrier