Why Toddlers Hit When They're Angry, and What to Do Next

You're at the park. Everything is fine. Then your three-year-old suddenly slaps another child because he wanted to go down the slide first. Every parent nearby looks at you. How mortifying.

If this has happened to you, you're not alone. Hitting and biting in toddlerhood are normal. It is not a sign that you failed as a parent, or a sign that there is something wrong with your kiddo. In that moment, your child needs your support, not punishment. Their body is moving faster than their words.

Why Toddlers Hit or Bite

Here's a number that surprised me the first time I read it: in one research synthesis covering ages 4 to 24 months, 91% of children showed some form of physical aggression. So, essentially all of them.

Aggression in children peaks around age two and then naturally drops off as they develop more impulse control and language skills. Your toddler isn't making a moral choice to hurt someone. They're communicating with the skills that they have, and using their bodies is one of their main resources. The reasons may vary: frustration, feeling overwhelmed, wanting your attention, fear, or even just excitement. There's no single cause, which means there's no single fix.

My son is currently in a biting phase. He will sometimes come up to me, out of nowhere, and take a nice chomp out of my arm or leg. I have noticed that he typically does it out of excitement or having a lot of energy, but at times he also gets frustrated and will purposefully try to hit me.

Even though I know aggression in toddlers is normal, it is still hard to face it when their fat little fist smacks you across the face. Knowing the research and being calm in the moment are two very different skills.

What to Do in the Moment

First, stay calm. I know, everything in your body wants to go into fight-or-flight when you are facing physical aggression. With little ones, they can calm down most effectively when you are calm too. Pause if you can. Take one breath if you can. I realize this is very annoying advice when someone has just bitten your thigh.

Stop the behavior with a firm, short limit. "I won't let you hit." "No hitting." That's it. No lecture.

If another child was hit, comfort that child first. This isn't about shaming yours. It is about modeling caring for others and doing repair.

Then name the feeling behind the behavior. Something like: "You wanted to slide first and your body got angry." You're not excusing the hit. You're helping your child connect what they felt with what their body did.

Keep it short. A toddler who is that upset cannot process a paragraph. Say less than you think you need to. If needed, physically remove your child from the situation to keep other people safe. This may mean literally carrying them away from the playground, the other child, etc.

What to Teach After Everyone Is Calm

Once the storm has passed, that's when the real teaching happens. Revisit what happened in a simple, direct way. "Earlier you were mad and you hit. Next time, what could we do?"

Give them a replacement behavior. "Next time, we can stomp our feet. Squeeze a pillow. Say 'I'm mad.' Come find a grown-up." Give their body something to do that isn't hitting.

Over time, these skills add to their internal emotional dictionary. The more words a child has for what they're feeling, the less they need their body to say it for them. Books and stories that name feelings can help with this, including the ones we write at The Mindful Peach.

When to Get Extra Support

Most toddler aggression is developmentally appropriate. It typically improves with consistent, calm responses over time.

However, if the aggressive behavior is frequent, severe, persists well beyond age three, or you just have a feeling something is off, talk to your pediatrician.

You and your child are learning how to do this together. That's exactly how it's supposed to work.