Red-ruffed lemurs are the world’s largest lemurs, living in female-dominated family groups of 2 to 16 animals. Red-ruffed lemurs are arboreal (live in trees) and very rarely descend to the ground. They are active during the day and spend most of their waking hours socializing and eating. They are critically endangered due to deforestation, hunting for bushmeat, and poaching for the illegal pet trade.