Quick answer
Proboscis Monkeys feed on leaves, unripe fruit, seeds, and flowers, adjusting with season, age, and what is abundant in Borneo mangroves, peat swamp, and riverine forest. That label is a preferred pattern, not every item an individual might sample.
Key takeaway
Proboscis Monkeys feed on leaves, unripe fruit, seeds, and flowers, adjusting with season, age, and what is abundant in Borneo mangroves, peat swamp, and riverine forest. That label is a preferred pattern, not every item an individual might sample.
Proboscis Monkey diet overview
Proboscis Monkeys (Nasalis larvatus) are best summarised as Herbivore — leaves, unripe fruit, seeds, and flowers. Anatomy and habitat (Borneo mangroves, peat swamp, and riverine forest) decide whether they hunt, graze, filter, scavenge, or mix strategies across the year.
How proboscis monkeys find food
Energy-rich foods are prioritised when available; lean seasons force broader diets or longer travel. Young animals may eat different items or receive food from parents.
Proboscis Monkey role in the food web
As herbivores shaping plants and seeds, proboscis monkeys move nutrients and influence prey or vegetation.
Feeding and human conflict
Never feed wild proboscis monkeys. Habituation raises injury risk and can lead to lethal management. Captive diets must match species needs, not generic pet food rules.
Distribution and habitat
Proboscis Monkeys live in Endemic to Borneo — mangroves, peat swamp, and riverine forest in Sabah, Sarawak, Kalimantan, and Brunei. Preferred habitat includes borneo mangroves, peat swamp, and riverine forest. Across Asia, population density reflects prey availability, water access, and human disturbance. Protected areas and wildlife corridors remain essential for long-term persistence.
Physical traits and behaviour
Proboscis Monkeys typically reach about 0.75 m in length and 20 kg in weight, with top speeds near 24 km/h. Borneo's big-nosed swimmer. Daily activity, social structure, and seasonal movements reflect pressures in their native environment.
Sources
Proboscis Monkey FAQs
What do proboscis monkeys eat?
Proboscis Monkeys feed on leaves, unripe fruit, seeds, and flowers, adjusting with season, age, and what is abundant in Borneo mangroves, peat swamp, and riverine forest. That label is a preferred pattern, not every item an individual might sample.
What is the scientific name of the proboscis monkey?
Nasalis larvatus — used in research and conservation listings for proboscis monkeys.
Where do proboscis monkeys live?
They are associated with Borneo mangroves, peat swamp, and riverine forest. Local presence depends on food, cover, and human land use.
What is the conservation status of proboscis monkeys?
Listed in our guides as Endangered. Check the IUCN Red List and national assessments for the latest formal category.