The oil industry also poses a threat. Drilling operations in Papua New Guinea, which funnel oil to the Gulf of Papua via pipeline, have steadily destroyed rainforest habitats for over a decade.
Matschie's tree kangaroos have also been targeted by indigenous hunters for meat.
But the fight's not over for these hardy marsupials. One thing's for sure: This incredible animal is worth knowing about - and saving.
You can buy an acre of threatened rainforest habitat here.
YouTube/Great Big Story