 With the evolution of grasping hands and feet, claws are no longer necessary for locomotion, and instead most digits exhibit nails.However, claw-like nails are found in small-bodied callitrichids on all digits except the hallux or big toe.A laterally flattened grooming claw, used for grooming, can be found on the second toe in living strepsirrhines, and the second and third in tarsiers.