The northern nail-tail wallaby (Onychogalea unguifera) also known as the sandy nail-tail wallaby, is a species of macropod found in Queensland, Western Australia and Northern Territory. Unlike the bridled nail-tail wallaby, the northern nail-tail wallaby is not a threatened species. The only other member of the genus, the crescent nail-tail wallaby, is extinct. The northern nail-tail wallaby by far the largest species in the genus Onychogalea. It is a solitary, nocturnal browser feeding on a variety of foliage. It is a sandy colour, which gave rise to its other common name.