Lemurs are primitive monkeys that originally inhabited parts of North America, Eurasia, and Africa, but competition with monkeys and apes resulted in their present distribution, restricted to Madagascar. Humans arrived on Madagascar about two thousand years ago, contributing to extinctions of one third of the island's species through habitat destruction, hunting, climate change, and perhaps new diseases. Most lemurs are highly endangered. Most lemurs are arboreal (tree-dwelling), although ring-tailed lemurs spend more time on the ground. Lemurs subsist primarily on three to four food species, consisting of a mix of leaves, fruit, buds, bark, and shoots, but favored foods can vary monthly or seasonally. The golden bamboo lemur tolerates high levels of cyanide in the bamboo shoots. The smaller, nocturnal lemurs and the ayeaye eat more insects. Several species are cathemeral (active during parts of day and night), and there are also diurnal (day-active) forms, such as ring-tailed lemurs or indris. The diurnal species mayhave a nocturnal past, because they share certain features with nocturnal lemurs, including seasonal breeding, female dominance, and reliance on scent for communication.
Thanks for description - Animal life club