A six year old female Pacific walrus (Odobenus rosmarus divergens) presented in February 1988 with a bone like mass protruding from the left maxilla at a sight which corresponded with an earlier tusk removal. The initial tusk removal was performed bilaterally on the maxilla in June 1984. With the walrus under general anesthesia this mass was removed and diagnosed as bone on the histopathologic examination. In August 1988 more bone like material was observed protruding from the previous tusk removal site. The animal was again placed under general anesthesia and a more radical removal was performed. At this time a complete tusk was removed from the right side. Upon further examination of the animals left maxilla an exploratory of this area resulted in removal of a piece of maxillary bone above which was sitting a complete tusk which was also removed. The conclusion drawn from these findings is that following surgery in 1984 the maxillary bone healed over the tusk cavities. The pulp which remained following the tooth removal generated a new tusk which eventually fractured and forced out the underlying maxillary bone.