This species is endemic to Australia, where it generally ranges from Townsville to the Burdekin and Bowen Rivers, north-west to Croydon and south-west to Hughenden in north-eastern Queensland (Eldridge and Close 2008). Populations are also present on the Magnetic and Palm Islands. It is found from sea level to 1,000 m asl.

Found only in northern Queensland, Australia (Strahan 1995).

Biogeographic Regions: australian (Native )

Physically, Allied rock-wallabies have large hindfeet, reduced forepaws, and large hindlegs compared to their arms. They stand upright and move bipedally. The coloration may depend on surrounding rock color. They are usually gray-brown on the body with lighter brown underneath and on their appendages, and darker paws and feet. The tail has a brush that becomes darker in coloration towards the end (Strahan, ed. 1995).

Range mass: 4.3 to 4.7 kg.

Range length: 512 to 496 mm.

Other Physical Features: endothermic ; bilateral symmetry

Habitat and Ecology

Systems

• Terrestrial

Rock dominated terrain in northern Queensland, Australia (Strahan 1995).

Habitat Regions: terrestrial

Terrestrial Biomes: forest

Members of this species use darkness as a cover or shelter when foraging. Breeding pairs have been known to eat together, and feeding individuals also seem to prefer to be near to others with whom they are not breeding (Horsup 1994).

Primary Diet: herbivore (Folivore )

They are seldom threatened by predators.

Known Predators:

• feral cats (Felis silvestris)
• red foxes (Vulpes vulpes)

Petrogale assimilis is prey of:
Felis silvestris
Vulpes vulpes

This list may not be complete but is based on published studies.

The Allied rock-wallabies may live over seven years in the wild (Delaney 1997a).

Observations: Little is known about the longevity of these animals. They have been reported to live up to 13 years (Fisher et al. 2001), which is plausible but unverified.

Mating System: monogamous

Allied rock-wallabies are usually found in facultative, long-term, monogamous pairs, although females may have extra-pair copulations. They breed continously throughout the year, yet certain times seem to be more common (Spencer et. al 1997).

Range age at sexual or reproductive maturity (female): 23 to 17.5 months.

Range age at sexual or reproductive maturity (male): 23 to 17.5 months.

Key Reproductive Features: year-round breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization (Internal )

Average gestation period: 31 days.

Average number of offspring: 1.

As with other marsupials, birth occurs early in the developmental process. At birth, young crawl to a pouch. They stay in the pouch on the teat for roughly 180 to 231 days. Sexual maturity occurs at 23 months for males and 17.5 months for females (Delaney 1997b).

This species of rock wallaby has fairly stable population numbers, rarely reaching low levels. A possible threat to the species is introduced predators during a drought (Delaney 1997a).

US Migratory Bird Act: no special status

US Federal List: no special status

CITES: no special status

IUCN Red List of Threatened Species: least concern

Population

Population Trend

Major Threats

Conservation Actions