A level bite and extreme undershot bite are considered faults to the degree that the bite interferes with the dog's ability to work. Teeth are not visible when the mouth is closed. Worn teeth or broken teeth are acceptable. The nose is large with wide, open nostrils. The nose may be any color but darker pigment is preferred.
Eyes are medium in size, round, and set well apart.
All colors are acceptable but brown is preferred. Haw is not visible. Dark eye rims are preferred. Very visible haws. Ears may be cropped but natural ears are preferred.