Sumatran Orangutan (Pongo abelii) male, Gunung Leuser National Park, North Sumatra

pongo abelii tropical rainforest adult male alone glance portrait front shot look pongo endemic critically endangered iucn cr national park august gunung leuser national park sumatran orangutan pongo abelii nobody tropical rain forests ombrophile forest shade plants rain forest rainforest rain forests ombrophile forests adults males single lonely only solo one lone glances looking at camera portraits front views front sights front sight front shots front view looked looking endemics endemic species critically endangered species national parks sensitive natural areas with nobody tropical forest forest area stage of development individual enumeration morphology zoology morphology organism shot ponginae hominidae catarrhini haplorhini primates mammalia therapsida synapsida vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota species particularity species threatened endangered species iucn red list of threatened species environment protection environment management biodiversity management environment convention on international trade in endangered species of wild cites sumatra indonesia insulinde south east asia far east asia orangutan pongo sp great ape old world monkey primate mammal wild animal animal