Mammals Most active at dawn and dusk

Javan Chevrotain

Tragulus javanicus

iNaturalist Wikipedia

The Javan Chevrotain is a living relic of evolutionary history—the world's smallest hoofed mammal, appearing like a cross between a tiny deer and a rabbit. This elusive forest dweller moves through the Javanese shadows with unmatched grace and extreme caution.

0 Sightings

0 Habitats

Quick Identification

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Size

Length: 45–55 cm (18–22 in); Shoulder height: 20–25 cm (8–10 in); Weight: 1.5–2.5 kg (3.3–5.5 lb)

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Colors

Reddish-brown or rufous upperparts with a white underbelly; dark nape stripe; distinctive white 'V' or 'Y' shaped markings on the throat.

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Key Features

Miniature, rabbit-sized body with extremely slender legs
Lacks antlers; males have elongated, tusk-like upper canines
Large, prominent dark eyes and a moist black nose
Arched back with a hindquarters higher than the shoulders

When You’ll See Them

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Activity pattern Most active at dawn and dusk

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Peak hours 5-8 AM, 5-9 PM

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Season Year-round

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Diet Primarily herbivorous, focusing on fallen fruits, seeds, young leaves, and succulent shoots. They are selective foragers that favor high-energy plant parts found on the forest floor.

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Habitat Dense primary and secondary tropical forests, often favoring areas with thick undergrowth near water sources or swampy lowlands.

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Where Does the Javan Chevrotain Live?

Native to the continent of Asia, the Javan Chevrotain is a rare endemic specialist found exclusively on the island of Java in Indonesia. While historical records and local lore suggest they may inhabit the neighboring island of Bali, verified scientific sightings there are virtually non-existent in modern times. Their core range is now restricted to the remaining fragmented forests of Java, particularly within protected national parks and remote mountainous regions where the tropical canopy remains intact.

Basemap © OpenStreetMap contributors

1 Countries

128K km² Range

Data Deficient Conservation

ID Indonesia

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iNaturalist / Verified observation data

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Behavior

The Javan Chevrotain is a famously shy and solitary creature, navigating the dense tropical undergrowth with a delicate, high-stepping gait. Despite being an ungulate (hoofed mammal), it behaves more like a rodent or a rabbit, utilizing 'run-and-hide' tactics to evade predators. When threatened, these tiny deer-like animals are known to rapidly beat their hooves against the ground in a rhythmic drumming pattern, which serves as a warning to others or a distraction to predators.

While they are primarily solitary, they may occasionally be seen in pairs during the breeding season. They are highly territorial, with males using their scent glands located under their chins to mark their home ranges. Because of their small size and secretive nature, they are rarely seen by humans in the wild, often freezing perfectly still at the sound of an approach before darting into the thickest brush available.

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Camera Tips

Capturing the Javan Chevrotain requires a specialized approach due to their diminutive stature. You must mount your camera much lower than you would for standard deer; aim for a height of about 20 to 30 centimeters (8-12 inches) off the ground. Angle the camera slightly upward if the terrain is sloped to ensure you capture the throat markings, which are vital for identification. Because they are so small, even minor obstructions like a single large leaf can completely obscure the animal, so clear a small 'stage' in front of the lens.

Placement is everything. Look for 'micro-trails'—tiny, narrow paths through the leaf litter that are too small for larger mammals. These often lead to fallen fruit trees or permanent water holes. In a backyard or garden setting near Javanese forest edges, placing the camera near low-hanging fruit or vegetable patches can be highly effective. They are particularly attracted to the scent of fallen figs or wild berries.

Since these animals are crepuscular and frequently move in low-light conditions, use a camera with a high-quality infrared flash to avoid startling them with white light. A fast trigger speed (under 0.3 seconds) is non-negotiable; mouse-deer are 'twitchy' and move with sudden, jerky bursts of speed. Set your camera to take 'burst photos' or short video clips, as a single still image often only captures the tail-end of the animal as it zips past the frame.

Frequently Asked Questions

The Javan Chevrotain is primarily crepuscular, meaning it is most active during the twilight hours of dawn and dusk. However, in areas with high human activity, they may become more strictly nocturnal to avoid detection.

If you live within their native range in Java, you can attract them by maintaining dense, natural undergrowth and planting native fruit-bearing trees. They are especially attracted to fallen fruit like figs and berries on the forest floor.

They are selective herbivores that eat fallen fruits, seeds, and tender young shoots. Unlike larger ruminants, their small stomach requires high-quality, easily digestible food found on the forest floor.

They are generally not common in urban or suburban areas unless your property directly borders a significant forest fragment or national park in Java. They require dense cover to feel secure and are extremely sensitive to domestic dogs.

The Javan Chevrotain is slightly larger and more reddish than the Lesser Mouse-deer. It is best identified by the specific pattern of three white stripes on its throat and its geographic location on the island of Java.

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