The North-eastern Woolly Mouse Opossum is a small marsupial with long, soft fur and dark rings around the eyes. Its tail is longer than the body and furred only near the base.
The back and sides are smoky gray-brown, with dark rings around the black eyes and pale orange cheeks. Its fur is long and soft; the first 3-5 cm of the tail is furred, while the rest is bare and may have a whitish tip.
It is nocturnal and often forages high in trees, although some sites have records of frequent ground foraging. In French Guiana it eats fruit pulp, nectar, and animal foods; in northern Brazilian mangroves, insects and fruit have been recorded.
In Pantanal populations, belly fur has been reported to change from salmon-pink or orange to creamy during May and June. The authors suggest this may be linked to seasonal food changes.
An extinction-risk assessment has not been added yet.