Mammal
Silvered Leaf Monkey
Trachypithecus cristatusAlso known as Silvery Lutung, Silvery Langur
Silvered leaf monkeys are calm, canopy-dwelling primates renowned for their dark grey coats tipped with shimmering silver and their prominent cheek tufts. They live in cohesive social troops typically consisting of a dominant male alongside several females and their offspring, navigating mangrove and riverine branches with remarkable agility. Infants are born bright orange with creamy white skin, an eye-catching coloration that encourages allomaternal care, prompting group females to groom, protect, and baby-sit them until their silver fur develops around three months of age.
ArborealFolivorousDiurnal
—observations
—countries
—peak records
VulnerableConservation statusIUCN Red List categoriesLCNTVUENCREWEXVulnerableRed List categories, explained →
Diet & preyFolivorous (young leaves, mangrove shoots, unripe fruit, seeds, and flowers)
Predators
- Sunda clouded leopard
- Reticulated python
- Crested serpent eagle
ThreatsMangrove clearing, palm oil expansion, coastal development, and the pet trade
HabitatsMangrove forests, coastal swamps, and riverine lowland forests
Life span20–25 years in the wild
Classification
- FamilyCercopithecidae
- SpeciesTrachypithecus cristatus
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Can inflict deep bites if cornered or harassed; observe quietly from a respectful distance.
- Why it is dangerous
- Possesses sharp, dagger-like canine teeth and strong jaws capable of inflicting severe puncture wounds and lacerations when defending young or threatened.
- How to recognize a risky encounter
- Look for dark charcoal to black fur frost-tipped with silver, crest-topped heads, and strikingly bright orange infants.
- What to do
- Never corner, touch, or attempt to feed individuals; step back slowly if a troop male displays open-mouth yawns or ground-slaps.
- What to notice
- Recognized by its slender build, long non-prehensile tail, spiky crest, and specialized mangrove and riverbank distribution in Southeast Asia.
- Support conservation
- Observe silently from boats or designated boardwalks without blocking shoreline travel paths or using flash photography.
Responsible observation
- Binocular viewing: Scan mid-canopy mangrove limbs in early morning to watch troop social grooming.
- Do not feed: Hand-feeding habituates individuals and can trigger territorial aggression or bacterial infection.
- Keep distance: Maintain at least ten meters to avoid stressing mothers guarding vulnerable infants.
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