The indri (; Indri indri), also called the babakoto, is a primate. It is one of the largest living lemurs with a head-and-body length of about and weight of between . It is a black and white lemur and maintains an upright posture when climbing or clinging. It is monogamous and lives in small family groups, moving through the canopy feeding mainly on leaves but also seeds, fruits, and flowers. The groups are quite vocal, communicating with other groups by singing, roaring and other vocalisations.