Baby Biting While Breastfeeding? Here's Why—and How to Stop It

You're deep into a peaceful nursing session—maybe you're scrolling your phone, maybe you're just soaking in those baby snuggles—when, out of nowhere: chomp. A sharp, searing pinch on your nipple.

Biting is one of the most common breastfeeding hiccups parents run into, especially once teeth enter the picture. But it’s not necessarily sign that it’s time to throw in the burp rag. Weaning is rarely the answer when a baby bites, according to La Leche League International. Instead, the fix usually comes down to figuring out why Baby is biting and calmly, consistently teaching them a new pattern. Here's what to know about why babies bite while breastfeeding, plus how to stop it—so you and your little one can get back to a pain-free nursing relationship.

Why do babies bite while breastfeeding?

Don’t take your baby’s bites personally! Babies bite for a handful of very predictable, fixable reasons—and none of them have to do with the quality of your parenting.

Teething

Teeth typically start breaking through the gums between 6 and 10 months of age—right around the time many babies are deep into their breastfeeding routine. Sore, swollen gums make babies want to gnaw on anything within reach, and unfortunately, your nipple often qualifies.

Distraction

Once babies pass the newborn stage, they get interested in the world—and the things inhabiting it. Sounds, siblings, or the dog wandering by may all cause a baby to pause mid-feed, and that pause is prime biting time.

The End of a Feeding

Many babies nip the breast as they're pulling away near the end of a feeding, once their hunger is satisfied and they're no longer actively nursing.

Illness or Congestion

A stuffy nose makes it hard for a baby to breathe and swallow at the same time. And because a congested baby may repeatedly break their latch (and teeth can catch skin in the process), a cold or ear infection can prompt biting.

A Reaction to Your Response

If you once yelped, jumped, or made a big dramatic sound after being bitten, your baby may have found that reaction fascinating enough to try to repeat. Toddlers and older babies especially love a good cause-and-effect experiment, and "make Mom make a funny noise" is a compelling one.

Wait, isn't it physically impossible to bite while nursing?

When a baby is latched on correctly and actively nursing (meaning they're sucking, swallowing, and getting milk), their tongue is positioned over their lower teeth, cupped around the breast. La Leche League International explains that when a baby is properly latched and actively removing milk, biting is physically impossible. Biting happens in the gaps: at the very start or end of a feeding, during a pause, or when Baby has already come off the breast and is just resting their gums there.

How to Stop Biting During Breastfeeding

The goal isn't to punish your baby (they truly don't understand that biting hurts you) but to interrupt the pattern before it becomes a habit. A few approaches tend to work well together…

Watch for the warning signs.

Most babies telegraph a bite before it happens: Sucking slows or stops, their jaw tenses, or they get that unmistakable "I'm about to do something" gleam in their eye. The moment you notice active nursing has paused, that's your cue to act—before teeth make contact.

Break the latch, don't yank away.

If you feel a bite coming (or already happening), resist the urge to pull your baby off the breast, which can drag against tender nipple tissue and cause more damage. Instead, slide a clean finger into the corner of your little one’s mouth to break the suction first, then remove them from the breast.

Keep your reaction calm and matter-of-fact.

Loud gasps, sudden movements, or a sharp "Ow!" can startle a baby into breast refusal. Or, if they're a little older, it can turn your reaction into a game they want to repeat. A firm, plain "no biting" while you calmly end that portion of the feeding sends a clearer message than a big emotional response.

End the feeding session after a bite.

If your baby seems done nursing (jaw relaxed, unlatched, playful energy), take that as your signal that this feeding is over rather than trying to coax them back on. This helps your baby connect biting with the nursing session ending.

Offer something else to chew on.

If teething seems to be the driver, offer a chilled (not frozen) teether or a clean, damp washcloth before and after feedings so Baby has an appropriate outlet for those sore gums.

Keep milk flowing during the feed.

A baby who's actively swallowing is a baby who can't bite. If you notice sucking slowing mid-feed, a gentle breast compression can help keep milk moving and remind your baby to get back to business.

Address illness.

If a cold or ear infection seems to be behind the biting, treating the underlying congestion—more upright positioning, a cool-mist humidifier, or a call to your baby's healthcare provider if you suspect an ear infection—often resolves the biting, too.

What Not to Do When Your Baby Bites

A few instincts, while completely understandable, tend to backfire:

• Don't yell or make a loud, dramatic sound: It can frighten your baby away from the breast entirely or, alternatively, become a reaction they find funny and want to trigger again.
• Don't pull your baby off the breast before breaking the latch: This can cause nipple damage!
• Don't flick your baby's cheek, tap their mouth, or use any physical correction: Babies don't have the cognitive ability to connect a physical reprimand with the bite. It just causes confusion and distress.
• Don't panic that this means the end of breastfeeding: Most babies stop biting once the underlying cause is addressed.

Caring for Your Nipples After a Bite

A bite can leave your nipple sore, and, in some cases, cracked. Never hesitate to reach out to your doctor or lactation consultant about nipple pain. And in the meantime:

• Let a little breast milk air-dry on the nipple after feeding; it has natural soothing properties.
• Apply a purified lanolin cream or your own expressed milk between feeds.
• Change nursing pads often to keep the area dry.
• If a bite broke the skin, keep the area clean and watch for signs of infection (such as increasing redness, warmth, or pus), and check in with your healthcare provider if you notice any of these.

Do I need to wean if my baby bites during breastfeeding?

No! Identifying and correcting the underlying cause is nearly always more effective than weaning, and biting is rarely a signal that a baby is "done" with breastfeeding. Many babies with teeth, or who are actively teething, never bite at the breast at all, and that a nipping habit that starts at the end of a feeding "can be taught to stop,” according to the American Academy of Pediatrics.

That's worth latching onto (pun intended!), especially since the AAP recommends continuing breastfeeding, alongside solid foods, for about the first year and beyond for as long as it's mutually desired by parent and child. A few uncomfortable weeks of troubleshooting a biting phase doesn't have to derail that timeline.

When to Seek Extra Help

Most biting phases resolve with time, patience, and the strategies above. But it's worth reaching out to an International Board Certified Lactation Consultant (IBCLC) or your healthcare provider if:

• Nipple pain is severe, doesn't improve after a week or two, or is accompanied by cracked or bleeding skin.
• You notice signs of a breast infection, like fever, redness, or flu-like symptoms.
• Your baby seems to be biting frequently even when actively nursing (not just at the start or end of a feed), which can sometimes point to a latch issue worth having assessed.
• You're feeling discouraged enough that you're considering weaning before you're ready, and want support troubleshooting first.

The American College of Obstetricians and Gynecologists notes that obstetrician-gynecologists and other obstetric providers are equipped to help troubleshoot common breastfeeding complications, so your own healthcare provider is also a reasonable first call if something feels off.

Related Reading:

• What Is Nipple Confusion? And How Do I Avoid It?
• Do I Have a Low Milk Supply?
• How to Prepare for Breastfeeding Success
• Teething Schedule: Baby Teething Chart and Timeline
• How to Help a Teething Baby

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Disclaimer: The information on our site is NOT medical advice for any specific person or condition. It is only meant as general information. If you have any medical questions and concerns about your child or yourself, please contact your health provider.