One of the largest of the lemur species, Red ruffed lemurs (Varecia rubra) are critically endangered primates from Madagascar, with rusty-red fur, loud calls, and a distinctive white patch on the back of their head. The red ruffed lemur is a very clean animal and spends a lot of time grooming itself and in social grooming – using a specialised "tooth comb" of incisors and a long toe claw for grooming. Red ruffed lemurs inhabit the tropical rainforests of the Masoala Peninsula in north-eastern Madagascar, dwelling in the upper levels of the forest canopy. They and are highly reliant on fruit, which makes up a large part of their diet.