Neospora caninum is an intracellular protozoan parasite that was first reco
gnized in dogs in 1988. N. caninum may cause neuromuscular disease in dogs.
Later it was discovered that N. caninum has a wide host range and is an im
portant cause of abortion in cattle. In this article, the literature on N.
caninum in the dog is reviewed, with emphasis on clinical signs, pathology,
diagnosis, treatment, and prognosis.