Why are apes the closest animal to resemble humans?

Answer 1

Apes resemble humans so closely that they are referred to as anthropoid (humanlike). Apes have large brains and are among the most intelligent animals. An ape's skeleton is similar to that of a human. However, relatively shorter legs and longer arms make apes better adapted for tree-dwelling and walking on all fours than for standing erect. Apes have short, coarse fur and rounded ears; there is little or no hair on the face and ears. They usually live in family or multi-family groups, although orangutans are also found singly or in pairs. The female usually gives birth to one offspring at a time. Apes feed chiefly on vegetation; they also eat eggs, insects, birds, and small mammals.

They have opposable thumbs. In other words, the thumb is capable of bending in a way that it can touch the other digits. This is a signature feature of the primate family and human beings.