Goodfellow's Tree Kangaroos are currently considered to be endangered, but it is expected that they will be downgraded to the status of critically endangered soon because of their waning populations. Dwelling only on the island of Papau New Guinea, they are solely herbivores, primarily eating the leaves of the Silkwood tree. As can be seen from the above pictures, they are marsupials. They are awkward walkers, but excellent climbers and hoppers. They have been said to hop from standing on the ground to heights of 30 feet.
Tree kangaroos, of which there are approximately 12 species, live exclusively in New Guinea and Australia. Most of them are considered to be either endangered or critically endangered. Logging and other development of rain forests have lead to much of their population decline, as well as being hunted for their fur and meat by the islands' indigenous people. Increasing protected areas and local awareness are recommended to preserve what remains of the species.