There are two different height standards for the Nigerian Dwarf goat. The height standard maintained by the American Goat Society and the American Dairy Goat Association requires does to be less than 22. 5 inches (57 cm) at the withers, and bucks to be less than 23. 5 inches (60 cm) at the withers. The Nigerian Dwarf Goat Association states does should ideally be 17–19 inches (43–48 cm) in height, with a maximum allowed height of 21 inches (53 cm), and bucks should ideally be 19–21 inches (48–53 cm), with a maximum allowed height of 23 inches (58 cm).