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Proboscis Monkey

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  • English name
    Proboscis Monkey
  • ClassificationPrimates Cercopithecidae
  • Scientific nameNasalis Larvatus

Proboscis Monkey
Click the image to expand

The Proboscis Monkey has a unique face with long nose. It is in danger of disappearing because their living spaces, mangrove forests, are getting smaller.

Size & Weight (Adult)

Body length: Male 73-76cm / Female 61-64cm
Tail length: Male 66-67cm / Female 55-62cm
Weight: Male 21.2kg / Female 10kg

(Source: Doubutsu Sekai-isan* Red Data Animals Kodansha) (*World Animal Heritage)

Where they live

Proboscis Monkeys only live on Borneo Island in Southeast Asia.

What they eat

Proboscis Monkeys eat leaves, mangrove shoots and fruit above the trees.

What they are like

Proboscis Monkeys have big bellies as well as big noses. They need a big stomach to digest leaves.

Find out more about the Proboscis Monkey!

The longer they live, the bigger their noses become?!
Proboscis Monkeys are famous for their big noses. Male noses keep growing and growing, so the longer they live the bigger their noses become. But did you know that only the males' noses get bigger? Some Proboscis Monkeys have noses reaching down to their chins, but they are primates, like humans. It's funny to see a photo of Proboscis Monkeys because they start to look like someone you know...

The precious forests are disappearing...
Proboscis Monkeys began to disappear rapidly from 30 to 40 years ago. The reason was that people cut down their precious mangrove forests. Mangroves grow on the borders of rivers and the sea, so no one used them before. However, as time passed, people started to use them as lumber, pull them out by the roots to make shrimp pools. Then, the total mangrove area rapidly became smaller. Proboscis Monkeys have lost many of their precious forests.


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  • Part4 "Deforestation - building roads destroys animals"

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