Adult female Wallaroo's are bluish-grey above pale below and a yellowish tail. Adult males are charcoal grey to almost black, both species have a shaggy coat . Males weigh up to 45 kg, females up to 32 kg.
Sexual maturity is reached at 18-24months.
They inhabit open grassland, forest and woodland with rocky hills that provide shelter and caves.
The subspecies M. robustus robustus inhabits the eastern and western slopes of the Great Dividing Range. The subspecies M. robustus erubescens, or Euro, occupies most of the continent west of this region.
Major threats – Encroachment on their rocky habitat by hobby farms, dog attack and collision with motor vehicles