Males typically are larger than females. Large males guard females during breeding season using aggressive behavior with other males, and remain in pairs for long periods of time for foraging, basking, and mating. Females will also mate with the largest males they can find, a result of the
Good Genes Hypothesis. Females emit a pheromone from glands in the base of the tail when they are sexually receptive and males can find them by tracking their chemical trails through tongue-flicking. Males show higher tongue flicking rates when exposed to conspecific females verses heterospecific females when mating and will terminate behavioral interaction without initiating courtship if the pheromones do not match the species. Males can get particularly aggressive during mating season and even display mate guarding. Mate guarding thus lasts through a major portion of the mating season, which appears to be limited to about two weeks. Mate guarding can be costly, many suffer injuries and fatality at the hands of guarding their female. When pregnant, females experience a decrease in running (25%) and endurance (50%), thus switch to a less active or conspicuous role on the surface to avoid predators. The female lays between 8 and 22 eggs, which she guards and protects until they hatch in June or July. Female broadhead skinks will lay their clutch in decaying log cavities, and they have been observed to create a sort of nest by packing down debris within their cavities. The
hatchlings have a total length of to . ==Geographic range==