Congratulations to Allenby6 who solved the puzzle:
This week's answer is the Yellow Footed Rock Wallaby. It is significant to SA because a conservation management program has been established to protect vulnerable and declining yellow-footed rock-wallaby colonies in the Olary Hills, Central Flinders Ranges and Gawler Ranges (South Australia). 
From the site: http://www.environment.sa.gov.au/biodiversity/yellow_foot.html