They use this call to let other lemurs in the forest know where they are. The red ruffed lemur is one of the largest primates of Madagascar with a body length of up to 56 cm, a tail length of up to 62 cm and weighing at about 4 kg. They both live in the rain forest along the east coast of Madagascar, but they don't associate with each other.
Ruffed lemurs are mainly fruit eaters, though they also eat leaves and shoots.
Ruffed lemurs usually live in small family groups of up to ten individuals that include the adult male and female, and their offspring. Like all lemurs, and many Madagascan mammals, they have a fixed breeding season which takes place towards the end of the dry season. This is so the young can be born in the wet season when more food is available. The gestation period is about 102 days, which is short for such a large animal. Unlike other lemurs, ruffed lemur females can have up to six young at a time.