a marsupial (ie type of mammal) which is native to regions in Oceania, specifically Australia and the New Guineas

a native Australian

The West Lake Elementary School Mascot from the kangaroo family.

A wallaby (sometimes spelled wallabee or whallabee, though these are generally considered misspellings) is any of about thirty species of macropod (Family Macropodidae). Essentially, a wallaby is any macropod that isn't large enough to be considered a kangaroo and has not been given some other name. There is no fixed dividing line.