Proboscis Monkey

Proboscis monkeys are riverine Bornean primates famous for large noses, strong swimming ability, and social groups tied to mangroves and lowland forest edges.

• Travels in social groups linked to riverbank sleeping sites
• Crosses water confidently and swims well for a primate
• Feeds heavily on leaves, shoots, and unripe fruits

Habitat: Mangroves, peat swamp forest, river edges, and lowland coastal woodland.

Native range: Endemic to Borneo.

Proboscis Monkey has a mammal diet shaped by anatomy, habitat, and competition. The exact food mix depends on whether the species is built more for hunting, grazing, browsing, or omnivory.

• Plant material, prey, or both depending on species design
• Seasonally abundant foods in the local habitat
• Higher-value foods that match energy demands

The food available in mangroves, peat swamp forest, river edges, and lowland coastal woodland. often matters as much as the species' ideal diet.

Rarity: Rare · 82/100. The species has a limited range and relies heavily on threatened lowland wet forests and river corridors.

• Observe from boats at slow speed without cutting off river crossings.
• Keep noise low around evening roost trees along riverbanks.