Putty nosed guenons are the largest of the African forest guenons. Their extremely long tail (up to 1 meter) assists with balance as they negotiate the upper canopy of the rainforest. Although generally considered high canopy species, they are somewhat adaptable in their choice of habitat... and can be observed in middle and lower canopy swamp forest as well as upper canopy high forest. They form multispecies foraging groups with other primates, including red-eared and mona guenons.