Awwducational

Most primates have flat nails and opposable thumbs for grasping objects. Pygmy marmoset fingernails are like claws to help them climb tree trunks and they do not have opposable thumbs.

Most primates have flat nails and opposable thumbs for grasping objects. Pygmy marmoset fingernails are like claws to help them climb tree trunks and they do not have opposable thumbs.