Javan Slow Loris

Venom sets this small primate apart: it licks a gland on the inside of its arm, and the secretion, mixed with saliva, is delivered by the front teeth when it bites. Weighing under a kilogram and found only on Java, it climbs hand over hand without leaping and can clamp onto a branch for hours without tiring.

• It gouges holes in bark with its comb of lower front teeth and licks up the gum that flows out.
• The second finger is much reduced, giving the hand a wide pincer grip around branches.
• Until the 2000s it was usually treated as a form of the Sunda slow loris, not as a species of its own.
• Traders often clip out the teeth of lorises sold as pets, which leads to infection and frequently death.

They are nocturnal, resting hidden by day and moving deliberately at night.

Habitat: rainforest canopy, bamboo grove, and secondary woodland

Native range: Java, Indonesia

Tree gum, nectar, fruit, insects, and small prey.

They are nocturnal, resting hidden by day and moving deliberately at night.

They can live for many years, especially when protected from capture and habitat loss, turning careful movement into a long-term strategy.

Females usually bear one young that clings and is sometimes parked safely while the mother forages.

Sex differences are subtle to casual viewers.

Rarity: Very rare · 95/100. Javan Slow Loris depends on a narrow or fragile habitat base, so pressure on rainforest canopy, bamboo grove, and secondary woodland can affect it quickly.

• Keep distance and let the animal choose the space.
• Avoid blocking movement routes, nesting areas, or feeding behavior.
• Use optics, patience, and quiet observation instead of crowding for a closer view.