Some new world monkeys have claws instead of nails.
Various traits distinguish primates from other animals.
Grasping Adaptations
Prehensile Hands and Feet: Primates possess grasping hands and opposable big toes that enhance their ability to manipulate objects and navigate their environment.
Evolutionary Changes: Humans have evolved less opposability in feet due to bipedalism, impacting our grasping ability. However, young children may retain some of this ability.
Vision in Primates
Highly Developed Visual Systems: Primates have evolved distinctive eye structures.
Binocular Vision: The overlapping fields of vision from both eyes enable depth perception.
Stereoscopic Vision: Each eye transmits signals to both brain hemispheres, aiding in three-dimensional vision, essential for activities like jumping between trees.
Color Vision: All diurnal (day-active) primates possess color vision, which is absent in nocturnal primates, assisting in foraging and predator detection.