• Females breed year-round and exhibit embryonic diapause.

The unadorned rock wallaby inhabits terrestrial environments and develops on land, away from bodies of water, with nests built on the ground or near it, as well as in tree cavities, caves, crevices, on rocks, cliffs, or rocky outcrops. Embryonic development takes 1 month, and the female gives birth to a single, very small joey after a short gestation period; the young then enters the mother’s pouch and remains there for several months. The female raises one joey per litter, and parental care is exhibited only by the mother within nests in tree cavities or caves/crevices. Sexual reproduction occurs through homogamy, meaning that fertilization always happens. The species reaches maturity from 1 year 6 months to 2 years. The reproductive interval ranges from 6 months 3 weeks to 1 year. Young develop in the pouch or mouth of a parent on land.