This results in a strong bond between a baby and the mother. Primates are very social animals, and tend to form strong bonds with family and friends. While humans are similar to monkeys in many ways, there are also several significant differences. The human brain is more than twice the size of other primates. This makes humans the most intelligent primate, with the most developed communication, language and reasoning skills.
Humans are able to make and use complex tools to help control their environment.
Humans also walk upright on two legs.