Usually lemurs that are awake during the day live in groups. Besides using scent glands and tails to communicate, they also make noises. Nocturnal lemurs, that are active at night, tend to live alone. But on these islands, lemurs live in a variety of habitats. Some live in moist, tropical rainforests, while others live in dry desert areas.
Most lemurs live for about eighteen years.
Lemurs usually have a vegetarian diet, consisting of leaves and fruit, although they will occassionally eat insects or smaller animals. Out of the fifty different kinds of lemurs, ten of those types are critically endangered, seven are endangered, and nineteen are considered vulnerable. Lemurs play an important role in the ecology of Madagascar and the Comores Islands, because they disperse seeds from the fruit they eat. These seeds can then grow into new plants, which is important because the forests of Madagascar are being destroyed at a very high rate. Lemurs are threatened largely because their habitats are being destroyed.