Tree-kangaroos are marsupials of the genus Dendrolagus, adapted for arboreal locomotion (trees). They inhabit the tropical rainforests of New Guinea and far northeastern Queensland, Australia along with some of the islands in the region. Most tree-kangaroos are considered threatened due to hunting and habitat destruction.
There are a ton of them! These species are assigned to the genus Dendrolagus:
• Grizzled tree-kangaroo (D. inustus); northern and western New Guinea, plus the island of Yapen, and possibly Salawati and Waigeo
• Lumholtz’s tree-kangaroo (D. lumholtzi); Queensland, Australia
• Bennett’s tree-kangaroo (D. bennettianus); Queensland, Australia
• Ursine tree-kangaroo (D. ursinus); the Bird’s Head Peninsula, West Papua, New Guinea
• Matschie’s tree-kangaroo (D. matschiei); the Huon Peninsula, Papua New Guinea
• Doria’s tree-kangaroo (D. dorianus); western, central, and southeastern New Guinea
• Seri’s tree-kangaroo (D. stellarum); the highlands of west-central New Guinea
• Hoser’s tree-kangaroo (D. hoserae); the highlands of Mimika, West Papua, New Guinea
• Goodfellow’s tree-kangaroo (D. goodfellowi); central and southeastern New Guinea
• Golden-mantled tree-kangaroo (D. pulcherrimus); the Foja Mountains, Papua and the Torricelli Mountains, Papua New Guinea
• Lowlands tree-kangaroo (D. spadix); the southwestern lowlands of Papua New Guinea
• Dingiso (D. mbaiso); the highlands of west-central New Guinea
• Tenkile (D. scottae); Sandaun Province, New Guinea
• Wondiwoi tree-kangaroo (D. mayri); the higher areas of the Wondiwoi Peninsula, West Papua (thought to be extinct until 2018)