Technically a Kangaroo, everything in the Genus Macropus is a Kangaroo (even little tammar and red necked 'wallabies')The scientific name of this animal being Macropus Robustus there are 2 wallaby genus' teh Petrogale Rock Wallabies and Wallabia with the one true wallaby the Swamp wallaby.
At least thats according to my Ausy Mammal encyclopedia.