* Western red kangaroo (Osphranter robustus): Found in the arid and semi-arid regions of Western Australia, Northern Territory, and South Australia. Western Red kangaroos are the largest of all kangaroo species, with males reaching up to 2 metres (6 feet 7 inches) in height and weighing up to 90 kilograms (200 pounds).
* Eastern grey kangaroo (Macropus giganteus): Found in eastern Australia, from Queensland to South Australia. Eastern Grey kangaroos are slightly smaller than Western Red kangaroos, with males reaching up to 1.8 metres (5 feet 11 inches) in height and weighing up to 65 kilograms (143 pounds).
* Red-necked wallaby (Notamacropus rufogriseus): Found in eastern and south-eastern Australia, from Queensland to South Australia. Red-necked wallabies are significantly smaller than red kangaroos, with males reaching up to 1.3 metres (4 feet 3 inches) in height and weighing up to 20 kilograms (44 pounds).
* Bennett's wallaby (Notamacropus bennettii): Found in southwestern Australia, from Western Australia to South Australia. Bennett's wallabies are similar in size to red-necked wallabies, with males reaching up to 1.2 metres (3 feet 11 inches) in height and weighing up to 18 kilograms (40 pounds).
Western Red Kangaroos, Eastern Grey Kangaroos, Red-necked Wallabies and Bennett's Wallabies are the four closely related species of red kangaroos.