Adults can weigh anywhere between 500 and 900 grams (17.6oz to 32oz) and have a head and body measurement of 24 to 30 centimeters ( 9.5 to 11.8 inches) with tales that can be almost as long as their bodies. Proportionally, tale length will always be slightly shorter than the head and body length of the animal and rear legs are much longer than front arms. In general, these animals are brown to gray on their backs with the undersides being lighter in color. They possess a very dense woolly.
Often, weasel sportive lemurs will live solitary lives. Males have a larger territory and may cross into regions of two or three females for mating. Mating occurs in late spring and early summer, when a female is in estrous there is a characteristic swelling of her genitalia signaling males of receptiveness.
Weasel sportive lemurs are considered endangered species, their habitat is being removed for agricultural purposes and the animals are often hunted for their meat. Predators include snakes and any carnivorous species large enough to capture them, for example the fossa. These animals benefit their ecosystem by dispersing seeds. The weasel sportive lemur has been unsuccessful in multiple captivity settings and has diversified itself from similar species in its ability to digest high levels of cellulose.
The Greater sportive lemur, greater weasel lemur, weasel sportive lemur is listed as Near Threatened (LR/nt), is close to qualifying for or is likely to qualify for a threatened category in the near future, on the IUCN Red List of Threatened Species