 While the cheek teeth of heterodontosaurids are clearly adapted for grinding tough plant material, their diet may have been omnivorous.The pointed premaxillary teeth and sharp, curved claws on the forelimbs suggest some degree of predatory behavior.It has been suggested that the long, powerful forelimbs of "Heterodontosaurus" may have been useful for tearing into insect nests, similarly to modern anteaters.