Doria’s Tree-kangaroo

Mammals > Marsupials

AT A GLANCE
Common Name: Doria’s Tree-kangaroo
Scientific Name: Dendrolagus dorianus
Category: Mammals
Subcategory: Marsupials
Size: Head-and-body length: 20–31 in (51–78 cm); Tail length: 17–26 in (44–66 cm)
Weight: 14.5–32.0 lb (6.5–14.5 kg)
Lifespan: 10–14 years in the wild; up to 20+ years in captivity
Diet: Herbivore / Folivore (mid-canopy tree leaves, wild figs, epiphytes, mosses, and succulent forest vines)
Habitat: Mid-to-upper montane cloud forests, mossy beech forests, and dense tropical high-altitude canopies (elevation 600–3,650 m)
Range: Central and southeastern highlands of New Guinea
Conservation Status: Vulnerable (IUCN Red List)

Overview

Doria’s Tree-kangaroo (Dendrolagus dorianus) is a colossal, heavy-bodied arboreal marsupial that reigns over the cloud-draped mountain rainforests of New Guinea. Weighing over 30 pounds, this magnificent folivore represents one of evolution’s most remarkable reversals: having ancestral ground-dwelling macropod ancestors that adapted to leap across open plains, tree-kangaroos returned to the canopy, evolving muscular climbing forearms, curved grasping claws, and cushioned non-slip footpads.

Biology and Physical Characteristics

Dendrolagus dorianus is covered in a dense, woolly dark brown or mahogany coat that repels constant mountain drizzle. A striking whorl of hair in the center of its back directs rainwater efficiently off its body while it hunches in the canopy. Unlike terrestrial kangaroos, its forelimbs are nearly as long and muscular as its hind limbs, capable of gripping mossy limbs with immense strength. Its tail is thick, cylindrical, and pale yellowish, functioning as a non-prehensile counterweight during daring mid-air leaps between canopy branches.

Behavior and Ecology

Solitary and primarily nocturnal or crepuscular, Doria’s tree-kangaroo spends daylight hours dozing curled in elevated tree forks or climbing through tangled lianas in search of fibrous foliage. Remarkably surefooted, it can leap horizontally up to 30 feet (9 m) between trees and has been observed dropping safely from canopy heights of 60 feet (18 m) to the forest floor without injury, absorbing the impact through heavily padded heel pads.

Conservation and Human Impact

The species is classified as Vulnerable due to intensive subsistence hunting by indigenous communities using hunting dogs, as well as advancing deforestation from illegal logging, oil palm plantations, and mining infrastructure in highland New Guinea. Community-based conservation programs that establish protected forest preserves are critical for its long-term preservation.

Interesting Factoid

Doria’s tree-kangaroo possesses specialized flexible ankle joints that can rotate sideways by up to 180 degrees, allowing it to climb down massive vertical tree trunks headfirst just like a squirrel!

Last updated: October 2026