It is normal for infants and young children to occasionally bite. But sometimes biting points to a more serious behavioral problem related
to hostility and aggression. A child should be evaluated by a doctor if biting:
Is frequent and continues despite caregiver
efforts to control it.
Occurs after 3 years of
Occurs in a variety of settings.
Occurs out of general anger and/or aggression rather than
out of frustration or desire for an object.
Occurs with other
aggressive behaviors, such as hurting animals.