Craniofacial duplication (diprosopus) in a domestic lamb (Ovis aries).

A case of craniofacial duplication is described in a West African Dwarf lamb. The major gross anatomical malformations were only observed in the head. Physical examination revealed two heads which were joined laterally at the region of the angle of the mandible, resulting in the name diprosopus (dicephalus monopygus dibrachius). This is probably the first documented report of this particular type of congenital duplication in Nigeria.