Legs are white with specific breed markings on the knee, hocks and pasterns. Random spots occur. They can also be all white. At birth, the tail reaches about to the hock. Jacob tails may be docked.
Hooves are black or black and white striped.
The Jacob is a small, lean, fine boned, primitive breed. It stands longer than tall. The head is carried upright, the neck is medium to long. The udder and scrotum are comparatively small, free of wool and carried close to the body. The spine and hip bones are prominent.