A medium-sized lemur found only in the far north of Madagascar. It lives in moist and dry forests around places like Montagne d’Ambre and Ankarana, moving mostly in the trees but also travelling along branches and trunks close to the ground. Its body is about the length of a school ruler, with a tail even longer than the body, used as a counterweight when leaping.

Males are especially striking: they have a grey-brown back, darker limbs and tail, a black face and muzzle, and big, spiky white-to-cream cheek and ear tufts that give them a “furry old sage” look. Females are more softly colored, with a browner-grey coat and less dramatic cheek tufts, so a mixed group often looks like a blend of fluffy white-bearded males and subtler, brownish females.

Sanford’s brown lemurs are classic fruit-eaters and seed spreaders. Their diet is mostly fruit, but they also eat flowers, buds, young and mature leaves, and occasionally invertebrates like centipedes and millipedes. As they travel and feed, they swallow fruit and later drop the seeds in their dung or spit out chewed pulp, helping new plants sprout in different parts of the forest.

Studies in Amber Mountain have shown that some seeds actually germinate better after passing through their guts, which means these lemurs don’t just move seeds around—they may also boost the chances that certain trees will grow successfully. They’re generally cathemeral, meaning they can be active by day or night, with busy peaks in the afternoon and evening and extra foraging when there’s good moonlight. That flexible schedule helps them cope with changing food supplies and temperatures in the mountain and lowland forests.

Distribution

Country

Population est.

Status

Year

Comments

Madagascar

EN

2018