According to ABC News, Constable Greig has rescued many joeys while out on the road. Since she found orphaned little Quinn, they have been travelling together.
"When I got him he was about a kilogram; he was a tiny little thing but he was just the funniest, most robust little roo I've ever had," she says to ABC News.
According to The Murray Valley Standard, Quinn was just 5-months-old when Constable Greig found him.
Now he, along with two kelpies or Australian sheep dogs, patrol the outback and accompany Constable Greig for community visits.