For the record, while the western half of New Guinea is politically apart of Indonesia the Matschie's Tree Kangaroo is from the eastern side which is not politically apart of Indonesia and thus these guys should not be in an exhibit themed for Southeast Asian species. However, the general public most likely does not know this and if they were shown a photo of Southeast Asia and the surrounding islands, they'd most likely say New Guinea is apart of Southeast Asia.
For the record, while the western half of New Guinea is politically apart of Indonesia the Matschie's Tree Kangaroo is from the eastern side which is not politically apart of Indonesia and thus these guys should not be in an exhibit themed for Southeast Asian species. However, the general public most likely does not know this and if they were shown a photo of Southeast Asia and the surrounding islands, they'd most likely say New Guinea is apart of Southeast Asia.
One could also argue that animals don't know borders very well and that the whole of New Guinea could geologically be counted as a part of either South East Asia or Oceania
They may not recognize political borders but they do geographic borders. The deep oceanic trenches that separate Australasia, Wallacea, and Southeast Asia delineate these regions quite well and the wildlife present follow these boundaries quite well.
