Black and white ruffed lemurs live in female led groups that fluctuate in size from 2-20 individuals. The infants are born in litters of up to six, though two or three is more typical. Varecia are the only diurnal primates in the world to keep their infants in well-constructed nests which are concealed anywhere from 65 to 100 feet up in the treetops.
Humans present the greatest threat due to the destruction of the rainforest habitat.