Answer:
The term used to describe these children is feral children.
Explanation:
A feral child is a child that grows up isolated from human contact from an early age, which deprives them from the chance to learn and develop basic language, social, and intellectual skills. Feral children often mimic the behavior of animals and even develop their own language. Oxana Malaya is a famous case of a feral child rescued and then taught as much as possible. In the world, there are around 100 cases of feral children.