The German Shepherd Dog is well proportioned and very strong. The GSD has a sturdy, muscular, slightly elongated body with a light, solid bone structure. The head should be in proportion to its body, and the forehead a little rounded. The nose is most often black, however, blue or liver still do sometimes occur, but are considered a fault and cannot be shown. The teeth meet in a strong scissors bite. The dark eyes are almond-shaped, and never protruding. The ears are wide at the base, pointed, upright and turned forward. The ears of puppies under six months may droop slightly. The bushy tail reaches below the hocks and hangs down when the dog is at rest. The front legs and shoulders are muscular and the thighs are thick and sturdy. The round feet have very hard soles. There are three varieties of the German Shepherd: double coat, plush coat and longhaired coat. The coat most often comes in black with tan, sable or all black, but also can come in white, blue and liver, but those colors are considered a fault according to most standards. The white GSD dogs are recognized as a separate breed by some clubs and are being called the American White Shepherd. A piebald color has also occurred in a single GSD bloodline that is now being called a Panda Shepherd. A Panda is 35% white the remainder of color is black and tan, and has no white German Shepherds in its ancestry.