Biting in Preschool: Why It Happens & What to Do

By First Cubby Editorial · Updated 2026-07-09

Biting is common in toddlers and young preschoolers and almost always a passing phase. It usually comes from frustration, teething, over-excitement, or simply not having the words yet — not “bad behavior.” Respond calmly, tend to the bitten child first, give your child words for the feeling, and stay consistent, and it typically fades as language grows.

Why young children bite

Before they can say “I’m frustrated” or “I want that,” young children sometimes bite. Common triggers are frustration, teething discomfort, over-stimulation, tiredness, or testing cause and effect. It peaks in the toddler years and eases as vocabulary and self-control develop.

What to do

• Stay calm — a big reaction can accidentally reward the behavior with attention.
• Tend to the bitten child first — this shifts attention to the hurt, not the biter.
• Give a short, clear message: “No biting. Biting hurts.” Keep it brief.
• Offer the words they’re missing: “You wanted the truck. Say ‘my turn.’”
• Watch for patterns — hunger, tiredness, or specific situations — and head them off.
• Be consistent at home and school so the message is the same everywhere.

What not to do

Don’t bite back, don’t shame or label your child “a biter,” and don’t pile on long lectures a young child can’t follow. Those tend to backfire.

Working with the school & when to seek help

Ask the teachers what they see and agree on one consistent response. Most biting fades with time and language. If it’s frequent, intense, and persists well past age 3, talk with your pediatrician. See also hitting and aggression and your 2-year-old.

This is general guidance, not a diagnosis. If biting is intense or persistent, or you’re worried, talk with your child’s teacher and pediatrician.

Frequently asked questions

Why does my toddler bite?

Young children bite for reasons that aren’t “bad behavior”: frustration, teething, over-excitement, tiredness, or simply not having the words to express a big feeling. It’s a common, developmentally normal phase that most children outgrow as language grows.

How do I get my child to stop biting?

Stay calm, tend to the child who was bitten first, then give your child a short, clear message (“No biting. Biting hurts.”) and words for the feeling (“You were mad she took the toy”). Watch for triggers, stay consistent, and it usually fades as language develops.

Should I bite my child back to teach them?

No. Biting back (or hitting back) teaches that hurting is okay and can frighten your child. Calm, consistent limits plus teaching words and coping skills work far better.

Is biting a sign of a problem?

Usually not — it’s a common phase, especially before children have the language to express frustration. If biting is frequent, intense, and persists well past age 3 despite consistent responses, check in with your pediatrician.

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