Signs that biting is a behavioural problem

It is normal for infants and young children to occasionally bite. However, sometimes biting indicates a more serious behavioural problem related to hostility and aggression. A child should be evaluated by a health professional if biting:

  • Is frequent and continues despite caregiver efforts to control it.
  • Occurs after 3 years of age.
  • Occurs in a variety of settings.
  • Injures other people.
  • Occurs out of general anger and/or aggression rather than out of frustration or desire for an object.
  • Occurs with other aggressive behaviours, such as hurting animals.


Author: Amy Fackler, MA
Carrie Henley
Last Updated: June 26, 2006
Medical Review: Joy Melnikow, MD, MPH - Family Medicine
Michael J. Sexton, MD - Pediatrics
Thomas Emmett Francoeur, MDCM, CSPQ, FRCPC - Pediatrics

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