Wallabies are not a distinct biological group. Nevertheless they fall into several broad categories. Typical wallabies of the Macropus genus, like the Agile Wallaby (Macropus agilis), and the Red-necked Wallaby (Macropus rufogriseus) are most closely related to the kangaroos and wallaroos and, size aside, look very similar. These are the ones most frequently seen, particularly in the southern states. Red-necked Wallaby (Macropus rufogriseus) joey in pouch Rock-wallabies (genus Petrogale), rather like the goats of the northern hemisphere, specialise in rugged terrain and have modified feet adapted to grip rock with skin friction rather than dig into soil with large claws. There are at least fifteen species and the relationship between several of them is poorly understood. Several are endangered. Captive rock wallaby breeding programs like the one at Healesville Sanctuary have had some success and a small number have recently been released into the wild. ~wiki~
