This is a young bull, about 15 years old, who was born without the ability to grow tusks. One can tell this a congenital malady (and not broken off), because there is no 'socket' where a tusk had developed in his jaw. It would have been interesting to learn what other teeth he has. The tusk is a incisor tooth. It is not uncommon to see bulls with only one tusk and a flat area on the other side from which the other tusk should have grown. [Moremi NP, Botswana].