Wallaroo
The word “Wallaroo” is a combination (in both word and meaning) of a wallaby and a kangaroo. A Kangaroo is generally large and slim-bodied. A Wallaby is typically smaller and heavy-set. A Wallaroo is right in the middle.

Black Wallaroo, above This is the smallest and most timid of the Wallaroos. It is found on the Arnhem Land Escarpment and Plateau(Northern Territory)