A red German shepherd is called a liver German shepherd. Liver German shepherds can be a reddish cinnamon color or a dark chocolate color. The liver color comes from a recessive gene that prevents black pigment from being formed.
Liver German shepherds have a brown nose and light-colored eyes. Liver-colored German shepherds are disqualified from show competition.
Some German shepherds come in a color called "black and red." These dogs have a red-colored base color with a black saddle marking and a black muzzle. They are exactly like the black-and-tan colored dogs except their tan parts have a reddish tinge.