Abstract: Disclosed is a dental hygienic pet toy for dental prophylaxis on the teeth of a dog or other carnivore as the toy is chewed by the carnivore. The toy includes an elastomeric body having an outer surface and at least one groove which opens onto the outer surface. The groove is sized and configured so that a functional prophylaxis lip will scrape plaque and other debris from a tooth and gingiva of a carnivore which is repeatedly inserted into and at least partially withdrawn from the groove as the toy is chewed by the carnivore. An oral hygiene substance may be provided along the lip to enhance the benefit to the teeth and gingiva.