Growing up, kids are exposed to movies such as "Tarzan" and "The Jungle Book" where children are raised by animals. This appears to be "the good life" and kids desire to be able to have the freedom the children in the movies have. However, there are children who are actually "raised" by animals. They are called feral or wild children. They are often neglected or abused by their parents. Some run away and live in the wild, while others are forced to live in terrible conditions with a major lack of human interactions. This is where the debate of whether nature or nurture plays the role in the child's development. These wild children lack social, emotional, and physical behaviors that normal children develop and learn from having human interaction. These children do not have the required nurture from humans that is necessary for their development. Many people say that it is human nature to learn how to interact as a normal human being, but without the help from other humans, this is impossible. These children cannot function normally and sometimes, even after being rescued from the wild or their abusive situation, they cannot develop basic social skills. When rescued and evaluated, most of these children have the brain of a very young infant since they were never educated and are usually mentally handicapped. This shows how important the environment surrounding people is. If we are raised in the wild, then we will act as the animals do that surround us, but if we are raised in normal conditions, then we will develop the normal behaviors that are expected from humans.
Here is a video about a girl from the Ukraine who was found living with dogs: