A functioning udder is described in a 7-year-old Nubian male goat. The defect was not observed in any of his several off-spring. His semen had few dead sperm and his serum testosterone level was low. The udder was removed surgically. Histologically, the udder showed dense connective tissue lobules composed of acinar or tubulo-acinar structures and the teat orifice had no muscle sphincter.