The Broad-nosed gentle lemur (Prolemur simus) is a lemur that inhabits inland Madagascar’s bamboo-dominated tropical rainforests. More than 95% of its diet consists of bamboo, and it is notable for consuming large amounts of bamboo that contain toxins. Its body length is about 40–45 cm and it has a long tail; individuals form groups of 4–7 and communicate by vocalizations and scent. Breeding is seasonal, and its conservation status is Critically Endangered (IUCN Category I A).