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https://factanimal.com/proboscis-monkey/

Proboscis Monkey Profile

The proboscis monkey – also known as the long-nosed monkey – is one of the largest Old World monkey species found only on one southeast Asian island (Borneo).

Proboscis monkeys are diurnal (most active from late afternoon to night), omnivores, and known for their unusually long noses.

proboscis monkey facts

Proboscis Monkey Facts Overview
Habitat: Mangrove forests
Location: Borneo
Lifespan: 13-23 Years
Size: 50 to 76.1 centimeters (around 26 to 30 inches)
Weight: 16-30 kilograms (up to 50 pounds)
Color: Reddish-brown
Diet: Leaves, seed, unripe fruit, & insects
Predators: Clouded leopards, birds of prey, snakes, monitor lizards, & crocodiles
Top Speed: 24.1 km/h (or 15 mph)
No. of Species:
1
Conservation Status:
Endangered
Proboscis monkeys are found in the forests of Borneo, typically in areas close to water.

While their diet mainly consists of young vegetation and unripe fruit, they may also eat the occasional insect or small invertebrate. Due to their habitat in the tropical forests of Southeast Asia, proboscis monkeys are endangered with a declining population.

They are known to make various vocalisations and ‘honks‘, which help communicate their status in a group. They have special honks to infants for reassurance, as well as alarm calls for threats, or anger.

Although they spend most of their time in the treetops, they like to sleep on the thick branches growing over water. This provides them a quick escape if they were to come face to face with one of their many predators.

Proboscis monkeys know how to swim but won’t do so often – usually only when necessary, such as to cross a river or to escape from predators

Interesting Proboscis Monkey Facts

1. Proboscis monkeys are only native to one place in the world
Proboscis monkeys are what is known as an endemic species, which means they’re only native to one area in the world. 

For the proboscis monkey, they call a single island, Borneo, in Southeast Asia home, which just so happens to be the largest island in Asia – and the third-largest in the world!


2. They are some of the best swimmers
…and divers!

While there are many primates known for their swimming skills, the proboscis monkey takes the cake. It makes sense that they’re some of the best swimmers in the primate family when you consider their home near freshwater. They can even swim underwater!

3. They have nine stomachs

There’s a reason that these large-nosed monkeys are known as the cows of the primate world!

Just like cattle, proboscis monkeys have a complex stomach with many chambers – although they aren’t technically ruminants. Each one of these stomachs is filled with healthy bacteria to help them digest their food.

4. Males and females have different noses

While proboscis monkeys may pick their friends, they don’t pick their noses. Males have long, thick noses, while females’ noses are smaller and more pointed, like a human.

This means that proboscis monkeys have what is known as sexual dimorphism (when males and females of a species look different).

female proboscis monkey

5. Proboscis monkeys change colors as they get older

While it may come as a surprise, baby proboscis monkeys (called infants, just like with humans!) don’t come out looking just like their parents. Not only are their noses smaller, but they also are a completely different color!

When these infants are first born, they tend to be a dark color, either dark brown or even black. However, as they mature, they develop their iconic red hue, with many developing other colors such as grey, blue, and orange as well.

6. Their tell-tale noses can be longer than 10 centimeters

There’s no doubt that these primates have some of the longest noses around. However, do you know just how long they can grow to be?

A male’s nose can grow to be as long as 10 centimeters – that’s nearly 4 inches long! For reference, that’s around the same size as a toilet paper roll.

7. Ripe fruit can be lethal!

While it may seem strange that only unripe fruit are a major part of the proboscis’ diet, it’s for a good reason. Ripe fruit has sugar in it that can be difficult for the monkey to digest and break down. When too much is consumed, it can lead to fatal bloating. 

8. Larger noses are considered attractive

While their noses may look a little funny to us, they’re actually one of the ultimate factors in deciding whether or not a male will mate. Larger noses are associated with dominance in this species and louder calls, and so females are more likely to mate with males with longer noses. 

9. Male proboscis monkeys are permanently erect

They have a bright red penis and a perpetual erection, which is unique to this species.

 

also michael majlak's spirit song  ;p