Mammals nocturnal

Common Brown Four-eyed Opossum

Metachirus myosuros

With its striking 'four-eyed' mask and agile, ground-dwelling nature, the Common Brown Four-eyed Opossum is one of the most enigmatic nocturnal visitors to the tropical forest floor.

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Quick Identification

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Size

Body length of 25–30 cm (10–12 in) with a tail of 28–37 cm (11–15 in); weighs 250–800 g (0.5–1.8 lbs)

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Colors

Brownish-gray upperparts with creamy or pale yellow underparts; white spots above each eye; tail is dark near the base and white on the terminal half

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Key Features

Two distinct white spots above the eyes resembling a second pair of eyes
Extremely long, slender tail with a prominent white tip
Large, rounded, hairless ears
Lacks a permanent pouch, unlike most other marsupials

When You’ll See Them

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Activity pattern nocturnal

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Peak hours 9 PM - 3 AM

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Season Year-round

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Diet An opportunistic omnivore that forages for insects, small vertebrates like lizards and frogs, bird eggs, and a wide variety of fallen fruits and seeds.

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Habitat Primary and secondary forests, forest edges, and humid riverside thickets; occasionally visits gardens or orchards near wild areas.

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Behavior

The Common Brown Four-eyed Opossum is a solitary and primarily terrestrial creature, though it is a capable climber. Unlike many of its cousins that spend their lives in the canopy, this species prefers the forest floor, where it moves with a quick, nervous energy. It is famously shy and will usually freeze or flee at the first sign of a predator, though it can be quite defensive if cornered.

These marsupials are known for their unique nesting habits, often building globe-shaped nests out of dried leaves and twigs on the ground or in low-lying hollows. Because they lack a pouch, the mother carries her young attached to her teats and later on her back as they grow. They are highly territorial among their own kind but generally ignore other species unless they represent a food source or a threat.

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Camera Tips

To capture the Common Brown Four-eyed Opossum, you should position your camera low to the ground—no higher than 6 to 10 inches. Because this species is more terrestrial than other opossums, it frequently uses established 'game trails' through leaf litter or along the edges of fallen logs. Aim your camera at a slight downward angle toward a clearing in the undergrowth to ensure you get a full-body shot of that long, white-tipped tail.

Baiting can be very effective for this species. A mixture of mashed bananas and peanut butter or even a small amount of canned cat food can lure them into the frame. Place the bait behind a natural obstacle like a stone or a piece of wood so the opossum has to pause and reposition itself, giving your camera's sensor time to trigger and capture a clear image rather than a blur of movement.

Since they are strictly nocturnal, ensure your camera's infrared flash is optimized. These animals have highly reflective eyes, so if your camera allows for adjustable flash intensity, turn it down slightly to avoid 'white-out' on the face. In backyard settings, place your setup near a water source or along a dense hedge line where they feel secure moving under cover. High-speed burst mode is recommended, as they can be quite jittery and move unexpectedly.

Similar Species

Species that look similar or are commonly confused with Common Brown Four-eyed Opossum.

Gray Four-eyed Opossum

Noticeably grayer fur and females have a functional pouch; typically more arboreal than the brown species.

Virginia Opossum

Much larger with shaggier white/gray fur and lacks the distinctive white 'eye' spots.

Frequently Asked Questions

Common Brown Four-eyed Opossums are strictly nocturnal, meaning they are active only after dark. Their activity usually peaks a few hours after sunset and continues until shortly before dawn, as they use the cover of darkness to forage while avoiding predators.

If you live near their natural forest habitat, you can attract them by providing dense low-level cover like brush piles and offering aromatic treats like overripe fruit (bananas or mangoes) or small amounts of protein-rich food near the edge of your property.

They are omnivores with a very diverse diet. They primarily hunt for insects, spiders, and small snails, but they also eat small mammals, reptiles, and a significant amount of fruit, which makes them important seed dispersers in their ecosystems.

They are less common in urban centers than the Virginia Opossum, but they are frequently found in suburban areas that border woodlands, coffee plantations, or river corridors. They prefer gardens with plenty of shade and natural debris.

The easiest way to tell them apart is by their color and pouch; the Brown Four-eyed Opossum has a brownish tint and the females lack a pouch, whereas the Gray Four-eyed Opossum is distinctly gray and the females possess a well-developed pouch.

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