12 to 18 months · Hitting or biting
Hitting or biting at 12 to 18 months
Quick answer
What should I say when hitting or biting at 12 to 18 months?
You're upset. Biting hurts. I won't let you bite me or your sister.
What's happening developmentally
Biting and hitting at this age are usually about big feelings arriving faster than words do, teething discomfort, or overstimulation, not aggression as an older child or adult would mean it.
Three scripts to try
“You're upset. Biting hurts. I won't let you bite me or your sister.”
“You can bite this teether, or squeeze this pillow hard. Show me which.”
“Big feelings need a big stomp instead. Let's stomp them out together, ready?”
These are a starting point, not a transcript. Read when to reach for each type.
What not to say, and why
- “Biting them back to show how it feels.” — Models the exact behavior you're trying to stop and teaches that hitting is how bigger people solve problems.
- “A long lecture on empathy in the moment.” — Language this abstract lands after the storm, not during it; keep it to a short, firm line first.
When it usually passes
Most biting and hitting fades on its own by 2 to 2.5 years as language catches up, especially with a consistent same-second response every time.
When to talk to your pediatrician
If biting draws blood repeatedly, happens many times a day, or you notice it alongside a broader loss of skills, that pattern is worth a pediatrician conversation. Read our full typical vs. worth a pediatrician chat guide.