The Cavalier King Charles Spaniel is an active, graceful, well-balanced toy spaniel, very gay and free in action; fearless and sporting in character, yet at the same time gentle and affectionate. It is this typical gay temperament, combined with true elegance and royal appearance which are of paramount importance in the breed. Natural appearance with no trimming, sculpting or artificial alteration is essential to breed type.
Proportionate to size of dog, appearing neither too large nor too small for the body. Expression - The sweet, gentle, melting expression is an important breed characteristic. Eyes - Large, round, but not prominent and set well apart; color a warm, very dark brown; giving a lustrous, limpid look. Rims dark. There should be cushioning under the eyes which contributes to the soft expression. Faults - small, almond-shaped, prominent, or light eyes; white surrounding ring. Ears - Set high, but not close, on top of the head. Leather long with plenty of feathering and wide enough so that when the dog is alert, the ears fan slightly forward to frame the face.
Neck - Fairly long, without throatiness, well enough muscled to form a slight arch at the crest. Set smoothly into nicely sloping shoulders to give an elegant look. Topline - Level both when moving and standing. Body - Short-coupled with ribs well sprung but not barrelled. Chest moderately deep, extending to elbows allowing ample heart room. Slightly less body at the flank than at the last rib, but with no tucked-up appearance. Tail - Well set on, carried happily but never much above the level of the back, and in constant characteristic motion when the dog is in action. Docking is optional. If docked, no more than one third to be removed.
Shoulders well laid back. Forelegs straight and well under the dog with elbows close to the sides. Pasterns strong and feet compact with well-cushioned pads. Dewclaws may be removed.
Of moderate length, silky, free from curl. Slight wave permissible. Feathering on ears, chest, legs and tail should be long, and the feathering on the feet is a feature of the breed. No trimming of the dog is permitted. Specimens where the coat has been altered by trimming, clipping, or by artificial means shall be so severely penalized as to be effectively eliminated from competition. Hair growing between the pads on the underside of the feet may be trimmed.
The hindquarters construction should come down from a good broad pelvis, moderately muscled; stifles well turned and hocks well let down. The hindlegs when viewed from the rear should parallel each other from hock to heel. Faults - Cow or sickle hocks.