Woolly lemurs and their relatives are a family of primates native to Madagascar. The three groups in this family are the various sifakas, woolly lemurs and the single indri. All 19 species have thick and woolly fur. They fill a vegetarian primate role, much like the howler monkeys of America and leaf-eating monkeys of Africa and Asia. Sifakas and indris are diurnal, while the woolly lemurs are nocturnal.
Scientific name: Indridae