Monkeys have what kind of thumbs

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Thumb Opposability. Certainty Style Key. Certainty styling is being phased out topic by topic. Hover over keys for definitions:. What is MOCA? Human Uniqueness Compared to "Great Apes":. MOCA Domain:. Anatomy and Biomechanics. Humans rely on their thumbs to pick things up, write things down, button clothing, tie shoes and much more.

Nonhuman primates use their thumbs for a range of purposes as well, and different primate species have different kinds of thumbs with varying degrees of dexterity and motion. Some primates have the kinds of thumbs that let them create and use tools. While all primates have thumbs, not all primates are able to actually use them. Humans have what are known as opposable thumbs. This means the thumbs can move and rotate independently of the other four fingers.

Some primate species share this feature with humans, assisting them in grasping, manipulating and handling objects more efficiently. Opposable thumbs also assist in the creation and usage of tools, and the development of fine motor skills. Primates with opposable thumbs include great apes -- chimpanzees, bonobos, orangutans and gorillas -- and Old World monkeys like baboons and Colobus monkeys.