Rock wallabies live in rock piles, cliffs, outcrops, and boulder scree. There are a great many species, typically with a limited range, but which together can be found across most of Australia. Depending on species, mass can range from 1 to 14 kg. These wallabies are adapted for mobility on broken, uneven rocky terrain including the ability to climb nearly vertical rock faces. These wallabies are under threat by competition from introduced grazers (particularly goats) and predators (most notably foxes). Introduced populations in New Zeeland have become pests, and another population has become established on the Island of Oahu in Hawaii.