It had a longer muzzle that the King Charles Spaniel of today. By 1944, enough of the breed had been rediscovered to be recognized in England as the Cavalier King Charles Spaniel. The name Cavalier, which means medieval knight, was added by its breeders who hope that they have revived the medieval form of the breed. The Cavalier is very happy, active and fearless. It is very loving to its family and a good companion for both children and the elderly alike.
Upper lips hang slightly over the lower lips.
The body is short-coupled with a level back. The tail may be docked or not but if it is, it is to be no more than a third of the whole tail. The coat is long and silky but does not require excessive care. The weight of a Cavalier ranges from ten to eighteen pounds. The height averages from twelve to thirteen inches.