An aerobic gram-positive coccus that produces smooth gray-white colonies. It produces free coagulase and hemolysins. Some isolates may produce bound coagulase. It is part of the normal flora of the anterior nares, mucous membranes and skin of carnivores (dogs, raccoons, foxes), horses and birds (especially pigeons). It is rarely isolated from humans and primates. It is an opportunistic pathogen for animals including: ear infections, wounds, skin infections, and mastitis. Human infections can occur following animal bites.