The have been many stories of children having been brought up by wild animals. Most of these stories are not true. However, one case that was studied by scientists seems to be true.
Years ago in South Africa a child was stolen from its mother while only a baby, and raised by wild baboons. Around 1903, the "Baboon Child" was captured. The child, who was very bright, soon learned to speak English ans turned out to be a good farm worker. The "Baboon Child" recalled much from the twelve years of living with the baboon.