During the breeding season the pouch becomes fairly well developed on females. It consists of folds of skin that enlarge from the sides to partially cover the nipples. Perhaps it also uses the burrows of other animals or nests in deep cracks in the ground. It appears to be strictly terrestrial and nocturnal. The natural diet consists mainly of insects and other small invertebrates.
Females are polyestrous, being able t enter estrus up to six times during the season.
A female may rear up to six young per litter. Weaning occurs after about 3 months and sexual maturity at 11.5 months. Both sexes may live to breed in more than one season. Although the kultarr has a wide range, it once seemed to be rare. The USDI designates A. laniger as endangered, but this classification is intended to apply only to the population of the species that inhabits New South Wales and Queensland.