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Tree-kangaroo

life science Maturity 5-7 Next article →

Tree-kangaroos are amazing marsupials that live high in the trees.

Dendrolague
Dendrolague

Most of these animals live in the tropical rainforests of New Guinea. You can also find them in far northeastern Queensland, Australia. They are the only true arboreal macropods, which means they live in trees.

Lumholtz's tree-kangaroo
Lumholtz's tree-kangaroo

While regular kangaroos live on the ground, these animals thrive in the canopy. They are very special because they have adapted to a life in the treetops. However, many species are now considered threatened in the wild.

Grizzled Tree Kangaroo area
Grizzled Tree Kangaroo area

Moving through the forest requires a special way of working.

Bennett's Tree-kangaroo mother & baby
Bennett's Tree-kangaroo mother & baby

To climb, they wrap their front limbs around a tree trunk. They then use their powerful hind legs to hop upward. Their feet are broad with long, curved nails for gripping. They even have a sponge-like grip on the soles of their feet. A very large, heavy tail helps them keep their balance.

WPZ - Matschie's Tree Kangaroo 03
WPZ - Matschie's Tree Kangaroo 03

On the ground, they hop awkwardly at a human walking pace. In the trees, they are bold, agile, and expert leapers.

The history of these animals is a long journey of change.

Dendrolagus goodfellowi -Melbourne Zoo, Australia-8a
Dendrolagus goodfellowi -Melbourne Zoo, Australia-8a

Scientists think they evolved from ancestors that lived on the rainforest floor. During the late Eocene, the land began to get much drier. This forced some ancestors to move into rockier places. These ancestors may have become rock-wallabies that could climb trees. During the Pleistocene, global cooling caused more drying in the region. This isolated groups of animals in small patches of rainforest. These isolated groups eventually evolved into the tree-kangaroos we see today.

There are many different types of tree-kangaroos with unique facts.

Macropodidae - Dendrolagus dorianus
Macropodidae - Dendrolagus dorianus

Lumholtz's tree-kangaroo is the smallest of all the species. A male Lumholtz's tree-kangaroo weighs about 7.2 kg. Matschie's tree-kangaroo is larger, with males weighing up to 11 kg. The grizzled tree-kangaroo can weigh as much as 15 kg. Some species, like the Wondiwoi tree-kangaroo, were thought to be extinct until 2018.

Tenkile area
Tenkile area

Another species, the D. noibano, was much larger than living ones. These animals live in many places, from high mountains to lowlands.

Tree-kangaroos share some traits with the animals you might know.

Dendrolagus notatus 249639440
Dendrolagus notatus 249639440

Just like regular kangaroos, they are marsupials that use pouches. A baby, called a joey, stays in the pouch for a very long time. They also do not sweat to stay cool. Instead, they lick their forearms to let moisture evaporate. This is a way of staying cool called behavioural thermoregulation. They also face many of the same problems as other wild animals. Habitat loss from farming and logging is a very big threat to them.

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🖼️ Images & Media (23)
File:Goodfellow's_tree-kangaroo_at_Currumbin_Wildlife_Sancturary,_Queensland,_Australia.jpg
Goodfellow's_tree-kangaroo_at_Currumbin_Wi...
File:Dendrolague.jpg
Dendrolague.jpg
File:Grizzled Tree Kangaroo area.png
Grizzled Tree Kangaroo area.png
File:Lumholtz's tree-kangaroo.jpg
Lumholtz's tree-kangaroo.jpg
File:Lumholtz's Tree Kangaroo area.png
Lumholtz's Tree Kangaroo area.png
File:Bennett's Tree-kangaroo mother & baby.jpg
Bennett's Tree-kangaroo mother & baby.jpg
File:Bennett's Tree Kangaroo area.png
Bennett's Tree Kangaroo area.png
File:Dendrolagus ursinus Gould.jpg
Dendrolagus ursinus Gould.jpg
File:Ursine Tree Kangaroo area.png
Ursine Tree Kangaroo area.png
File:WPZ - Matschie's Tree Kangaroo 03.jpg
WPZ - Matschie's Tree Kangaroo 03.jpg
File:Matschie's Tree Kangaroo area.png
Matschie's Tree Kangaroo area.png
File:Macropodidae - Dendrolagus dorianus.JPG
Macropodidae - Dendrolagus dorianus.JPG

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