Imagine you were raised by wolves...
Imagine you were raised by wolves. You can envision how different your behavior would be. Maybe you would often crouch on all fours, bare your teeth, and hunt rabbits. Now imagine the identity crisis if suddenly you saw humans for the first time; how much more like you they are than the wolves, yet how differently they behaved, walking upright and clothed. What if you somehow you knew inside these were your parents, though, and they took you home at last? You might see how it starts to feel more natural to act like them and mimic their sounds than to be a wolf.