Why does my dog
Why does my dog nip at kids?
Our trainers take this call carefully, because a nip at a child is the moment a family decides whether to keep the dog, and most of the nips we see are a herding dog or a puppy doing something normal in a house that never gave it rules. Here is how to read it and what to do.
Last reviewed September 11, 2026 · by the Best Dog University Team
The short version
Five nips, and the context tells you which.
A herding nip happens when children run: the dog circles, barks and catches heels, and it is doing its job. A play nip happens during play, with a loose, wiggly dog that mouths hands and clothes and has never learned that human skin is off limits. An arousal nip happens when the game gets loud, the dog gets too excited and the mouth comes out harder than it meant. A fear nip happens when a child corners, grabs, hugs or falls on the dog, and the dog has no way out. A guarding nip happens near food, a toy, a bone or the dog's bed. The first three are common in young dogs and fixable. The last two are warnings that the household setup is unsafe.
- Herding: when children run
- Play: a loose, wiggly dog that mouths everything
- Arousal: the game got loud and the mouth got hard
- Fear: the child cornered, grabbed or fell on the dog
- Guarding: food, toys, bones or the bed
The reasoning
Why children trigger it, and why the rules have to run both ways.
Children move fast, squeal, grab, hug, stare and fall, which is everything a dog finds either exciting or alarming, and most dogs have never been taught what to do about it. A herding dog has an instinct that running children switch on. A puppy treats a child as a littermate because nobody showed it the difference. An excited dog tips over because nobody ended the game before it got loud. And a cornered dog has no exit, so it uses the one tool it has. The fix therefore has two halves: the dog learns a leave-it for movement, place when the children run, an off switch and the rule that skin is never for teeth; and the children learn to stop and stand when the dog gets excited, never to corner or hug a resting dog, and never to touch a dog with food.
Supervision is the third half. No dog and no child under about eight are left alone together while any of this is being learned, and a gate or a crate does the supervising when an adult cannot.
- Children move, squeal, grab and fall
- The dog learns leave-it, place, an off switch and no teeth on skin
- The children learn to stop, stand and never corner
- A gate or a crate supervises when an adult cannot
What it means for your dog
Puppies, herding breeds, adolescents and the dog that has broken skin.
A puppy that nips children is normal and needs the mouth rules: redirect to a toy, end the game at teeth on skin, enforce naps, and teach the children to be boring when it mouths. A herding breed needs a leave-it for movement, place whenever the children run, and a job for the brain, plus children who stop when the dog stares; it is management for life. An adolescent that nips in arousal needs the settle, games with a start and a stop, and a structured walk before the kids come home. A dog that has broken skin, nipped with a growl, or nipped a child near food or its bed is a different case: separate today, manage with gates and a leash, and get an consultation, because the next one may be a bite.
- Puppies: mouth rules and boring children
- Herding breeds: leave-it for movement, place, a job, for life
- Adolescents: the settle, game rules, a walk first
- Broken skin, a growl, or food or bed: separate and call today
The Houston factor
Big families, pools, long summers indoors and a lot of heelers and doodles.
Houston families are large and a house with three children under ten, a trampoline and a pool is a herding dog's dream and a nipping problem waiting to happen; the master-planned suburbs own a lot of Australian shepherds, heelers and corgis for exactly this reason. Summer keeps the children and the dog indoors together all day, which is when arousal nips peak, and the pool party, with screaming and running wet children, is the hardest test a herding dog faces. Our trainers build place, leave-it and the settle in the training home and hand them over with the children present, so the rules for the kids get taught at the same time as the rules for the dog.
Separate and supervise today: gates, a crate, a leash in the house
Write the children's rules: stop and stand when the dog is excited, never corner, hug or grab, never touch a dog with food
Teach the dog leave-it for movement and place when the children run
End every game at teeth on skin, and give games a start and a stop
A structured walk and a job before the children come home
Naps enforced for a puppy, because a tired puppy nips
An consultation this week for a nip that broke skin, came with a growl, or happened near food or the bed
The program
Gold for the herder and the mouthy adolescent, Platinum for the nip with a warning.
A herding or play nip in a young dog is a Gold case, two weeks at $2,500: leave-it, place, the settle and impulse control built in the training home and handed over with the children present. A fear or guarding nip, or a nip that broke skin, is a Platinum case, three weeks at $3,750, with an consultation first and unlimited lessons afterwards so the household rules hold. The aggression toward children page covers the serious end, the dogs and kids board and train page covers the family version, and the free phone consultation is where our team asks exactly what happened and what the child was doing.
The programs
Programs for a dog that nips at children.
Gold for the herder and the mouthy adolescent, Platinum for the nip with a warning behind it, lessons at home with the children present.
Asked and answered
Questions people ask about this.
Is my dog aggressive if it nips my child?
Usually not. Herding, play and arousal nips are a young dog doing something normal without rules, and they are fixable. A nip with a growl, one that broke skin, or one near food or the dog's bed is a warning, and that case needs separation today and an consultation this week.
Should I get rid of a dog that nipped my child?
Not before an honest assessment. Most nips are a herding dog or a puppy without rules, and they resolve with training for the dog and rules for the children. Some cases are management for life, and a few are not safe in a house with small children. Our team says which on the phone.
How do I stop my herding dog nipping the kids when they run?
A leave-it for movement, place whenever the children run, a job for the brain every day, and children who stop and stand when the dog stares. It is management for life with a herding breed, not a cure, and it works.
Can I leave my dog alone with my kids?
Not while any nipping is being worked on, and not with a child under about eight in any case. A gate or a crate does the supervising when an adult cannot. The rule protects the dog as much as the child.
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Tell our team exactly what happened and what the child was doing. The free phone consultation is a direct call.