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When some dogs are excited, they show their love and attention in challenging ways—treating people like chew toys.
To learn why this behavior happens in the first place and for advice about how to redirect the habit, we turned to the experts: Dr. Jerry Klein, Chief Veterinary Officer of the American Kennel Club, and certified dog trainer Kate Naito, an AKC Canine Good Citizen Evaluator, Manners Program Director at Doggie Academy and the award-winning author of two books about dogs.
The good news: in the vast majority of cases, puppy biting and mouthing is EXTREMELY normal, for several reasons:
The Top 5 Reasons Puppies and Dogs Playfully Nip
According to Naito and Dr. Klein, here are the most common causes of puppies and dogs that nip at their humans.
#1: To share how they’re feeling
As humans, we use our hands to express our emotions—such as through hugging and clapping, explains Naito. “Dogs use their mouths,” she says.
#2: To indicate they want to play
“The bites are not meant to hurt you, but rather to indicate the dog wants a play session, not a cuddle fest,” she adds. This is especially true for puppies and young dogs, who want to do nothing but play most of the day, she says.
You may find this happens when you want to calmly pet your dog. But the mere act of physical interaction can get your pup excited and then expect the teeth to come out.
While biting is an “aggressive behavior,” explains Dr. Klein, “nipping is usually a ‘conversation starter’ in puppies, a vehicle to start play and interaction.”
#3: To explore their environment
Just as human babies explore their worlds with their mouths, so to do puppies, explains Dr. Klein. That’s why when puppies play together, using their mouths is one of their main forms of play, he adds.
#4: It may have to do with genetics
“Certain breeds, such as breeds in the herding group, such as Corgis, Collies, and German Shepherds may have a higher incident due to them being bred to perform their original function for herding calves and sheep using their mouths to nip at the heels of calves and sheep in order to move the herd,” says Dr. Klein.
Naito cautions that it’s important not to make assumptions purely on a dog’s breed. “I get a lot of requests from Retriever or Retriever-mix owners about playful biting,” she says. “While it is true that these dogs are bred to use their mouths, there are other factors at play making them seem extra bitey.”
Families with young kids, for instance, may be more wary of dogs that nip.
“Also, the bigger the dog, the more painful the” playful biting can be, she adds.
More active breeds are also more likely to bite more frequently, says Naito, adding, “So families with large, strong, active breeds should be prepared to do lots of age-appropriate training and exercise for their young dogs.”
#5: They may be teething or want something to chew on
“Teething is terribly uncomfortable,” says Naito, explaining that dogs may simply be looking for anything they can get their paws—or teeth—on to soothe their discomfort. If that’s the case, she recommends having chew toys on hand.
You should be able to tell playful nipping from an unfriendly bite because an intentional bite is usually more direct, explains Naito.
When dogs deliver a more serious bite, they usually have specific body language: Approaching from head-on, with their bodies are usually stiff, straight, making no noise, she adds. “If you see a dog focus on a person or animal and suddenly get very still, a bite may follow,” says Naito.
“Biting is an aggressive behavior and requires proper training and professional assistance due to its inherent danger,” notes Dr. Klein.
Since puppies that nip can turn into adults that bite—especially since as adults, they will have larger teeth—the “playful nuisance” of nipping can become dangerous, he says, explaining that’s why people with pets that nip should act early to redirect the behavior.