Wiktionary
swamp wallaby
n. A wallaby, taxonomic name ''Wallabia bicolor'', known for its strong odor.
Wikipedia
Swamp wallaby
The swamp wallaby (Wallabia bicolor) is a small macropod marsupial of eastern Australia. This wallaby is also commonly known as the black wallaby, with other names including black-tailed wallaby, fern wallaby, black pademelon, stinker (in Queensland), and black stinker (in New South Wales) on account of its characteristic swampy odour. The swamp wallaby is the only living member of the genus Wallabia.