The indri (/ˈɪndri/ ; Indri indri), also called the babakoto, is the largest living lemur, with a head-body length of about 64–72 cm (25–28+1⁄2 in) and a weight of between 6 and 9.5 kg (13 and 21 lb). It has a black and white coat and maintains an upright posture when climbing or clinging. It is monogamous and lives in small family groups, moving through the canopy, and is herbivorous, 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. Besides humans, it is the only mammal found that can use rhythm. Along with the diademed sifaka, the indri is the largest lemur still in existence; both have average weights of about 6.5 kg. It can weigh up to 9.0 kg (19+3⁄4 lb) to 9.5 kg (21 lb) and perhaps up to 15 kg (33 lb). It has a head-body length of 64–72 cm (2 ft 1 in – 2 ft 4+1⁄2 in) and can reach nearly 120 cm (4 ft) with legs fully extended. (Source: Wikipedia.org, CC BY-SA)