The dusky leaf monkey, also known as the spectacled langur, is a species of primate that can live up to 25 years! Moreover, the word “langur” has a Hindu origin and means ‘long-tailed’. But, did you know this monkey has very similar hands and feet like us, humans? Well-developed fingers and opposable thumbs are used for many useful actions!

dusky leaf monkey

Where can we find the dusky leaf monkey?

Found across the Malay Peninsula, our friend occurs in southern Myanmar and some parts of Thailand. Moreover, the natural habitat also includes the islands of Langkawi, Penang, and Perhentian Besar. Finally, although found in various habitats, our friend prefers dense forests with lots of trees. Not surprising for a monkey with a long tail, right?

How does the dusky leaf monkey look?

Having a unique appearance, this monkey has a dark gray fur, although it can be brownish as well. Further, the white color patches around its eyes make our friend look like its wearing eyeglasses! The mouth has a white colored circle as well. Finally, this primate has well-developed fingers and opposable thumbs just like us!

dusky leaf monkey


Unlike the guinea baboon, this monkey is a herbivore. Thus, it will generally feed on young leaves, fruits, shoots, and seedlings. However, in captivity, the diet includes sweet potato shoots, lettuce, cabbage, kangkong, green beans, and carrots. Finally, our friend will sometimes eat insects, as well.


Like most monkeys, dusky leaf monkeys have a polygynous mating system. Naturally, males compete with each other for their mating rights. Thus, the largest, strongest, and most aggressive male will breed with females, during the whole year in periods. After a gestation of 145 days, a single infant is born. During the first 20 days, the baby will constantly be with its mother. Yet, after one year, the little leaf monkey starts climbing and slowly going away from its mother in search of food. Finally, after 3 to 4 years, the infant is ready to mate.

Did you know the dusky leaf monkey has a four-chambered stomach? This allows our friend to digest cellulose, just like the beaver!

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