A toy dog, intelligent, alert, sturdy, with a thickset, short body, a smart carriage and set-up, attracting attention by an almost human expression. There are two distinct types of coat: rough or smooth. Except for coat, there is no difference between the two.
A very important feature. An almost human expression. Eyes set well apart, very large, black, prominent, and well open. The eyelashes long and black. Eyelids edged with black. Ears small and set rather high on the head. May be shown cropped or natural. If natural they are carried semi-erect. Skull large and round, with a domed forehead. The stop deep. Nose very black, extremely short, its tip being set back deeply between the eyes so as to form a lay-back. The nostrils large. Disqualifications - Dudley or butterfly nose. Lips edged with black, not pendulous but well brought together, giving a clean finish to the mouth. Jaws must be undershot. The incisors of the lower jaw should protrude over the upper incisors. The lower jaw is prominent, rather broad with an upward sweep. Neither teeth nor tongue should show when the mouth is closed.
Neck medium length, gracefully arched. Topline - Back level and short. Body - A thickset, short body. Brisket should be broad and deep, ribs well sprung. Short-coupled. Tail - set and held high, docked to about one-third.
Forelegs medium length, straight in bone, well muscled, set moderately wide apart and straight from the point of the shoulders as viewed from the front. Pasterns short and strong. Feet round, small, and compact, turned neither in nor out. Toes well arched. Black pads and toenails preferred.
The rough coat is wiry and dense, the harder and more wiry the better. On no account should the dog look or feel woolly, and there should be no silky hair anywhere. The coat should not be so long as to give a shaggy appearance, but should be distinctly different all over from the smooth coat. The head should be covered with wiry hair, slightly longer around the eyes, nose, cheeks, and chin, thus forming a fringe. The rough coat is hand-stripped and should never appear unkempt. Body coat of sufficient length to determine texture. The coat may be tidied for neatness of appearance, but coats prepared with scissors and/or clippers should be severely penalized.The smooth coat is straight, short, tight and glossy, with no trace of wiry hair.
Hind legs set true, thighs strong and well muscled, stifles bent, hocks well let down, turning neither in nor out.