The Puppy Who Wouldn’t Stop Biting: a Case Study in Overcoming Extreme Puppy Bitiness

Last updated: September 18, 2025 | Originally published: June 18, 2022

You knew puppies bite. Everyone warns you about teething and play-biting.

But then your puppy starts biting hard.

Lunging at your arms, tugging on your clothes. Snapping at your face, even. Leaving you covered in scratches and bruises.

They seem weirdly… ferocious? Which probably feels like a ridiculous thought to even have, because they’re just a little baby.

And yet.

You can’t shake the feeling that this is NOT just play, or teething. It’s much more intense than you expected (or experienced with your previous dogs), and now you’re starting to worry that this pup isn’t the right fit for you.

Sound about right? You’re in the right place. We help our students overcome this very problem all day every day.

This post is a case study of one of those extremely bitey puppies. Onwards!

Meet Vinny, the World’s Bitiest Puppy (as he’s affectionately known around here)

Back in 2022, Kathryn joined our online training school because she couldn’t get her four-month-old rescue puppy to stop biting.

Every time someone touched him, they’d get chomped.

And while this wasn’t true aggression, it also wasn’t always play. He was basically throwing a tantrum every time anyone touched him for any reason.

Kathryn remembers:

Vinny definitely used his teeth to communicate with us when he wasn’t comfortable with touching or handling. Which, in the early days, was all the time.

I had many meltdown moments and was ready to rehome Vinny a number of times (not really, but in my mind I sure was). I definitely experienced the WTFWIT phase during that time.

Why was he like this?

Different puppies become extreme biters for different reasons.

In Vinny’s case, he’d lived in a foster home with young kids who played roughly and carried him around constantly. Our theory is that by the time Kathryn brought him home, he was a thousand percent done with people grabbing him.

How it started

We first met this dynamic duo at one of the live Q&A sessions we hold for our members. Here’s the clip of that full segment, if you want to check it out:

How it went: the training process

Kathryn quickly implemented our initial advice. On the member forums, she writes:

I’ve been working on the hand touching exercise, and he’s caught on to that quickly. I’ve already used it a few times when I can tell by his energy that his teeth are tingling for contact with skin. It worked well.

I think that you’re right, Erin, that Vinny’s issues around handling are a combination of frustration (lack of control/choice over being touched) and having learned from the kids that play biting is how puppies and humans interact. It’s often quite clear that he thinks that biting is all part of the game.

I’m also taking your comments about self care to heart, and relaxing a bit.

The next step: reducing how much Vinny needed to bite in the first place

We put together a plan to meet Vinny’s needs for exercise, play, rest, and enrichment so that he’d be less cranky. And most importantly, we taught Kathryn how to structure all of that activity in a way that actually calmed him down instead of making him more hyper.

She learned to read Vinny’s signals and ask: What does he need right now?

When he was wound up and bitey, I’d stop and ask myself: does he need to go out? More exercise? Less exercise? A nap? Once I figured out the source of his frustration (and there usually was one) life got easier.

This was a turning point:

I stopped beating myself up about not doing everything perfectly, worked my way through the lessons, stuck as closely as possible to a schedule that included regular naps for Vinny, and made more time for us humans.

Getting an X-pen and putting him in it when I was overtired and stressed was a game changer for us.

Teaching the puppy how to interact without using his teeth

Kathryn used all of our core “puppy taming” exercises to give Vinny better ways to interact and ask for what he wanted. She also worked on trust and handling.

Every morning, I’d sit on the floor in the X-pen with high value treats. Vinny got a treat for each gentle touch. At first, once the food was gone, the biting started again. Over time, though, he let me leave my hand on him a bit longer. Then I started to touch his toes/nails.

Eventually he gave us signs that he enjoyed being touched. That was a joyful day.

That’s not something you figure out on day one. Kathryn learned how to go at Vinny’s pace because she had a place to check in, describe what was happening, and get feedback on what to do next.

Handling the bitey moments

We also gave her some practical tools for what to do in the moment when Vinny would bite.

And sure, some of those practical tools involve methods I’m sure you’ve heard about, like using toys, or redirection, or even walking away and ignoring them.

But there are two keys to success that everyone misses:

1. Knowing which technique is appropriate to use when. Like, sometimes walking away and creating space is the answer, and sometimes that’s the worst thing to do. The right answer will be highly context-dependent.

So that’s why, like Kathryn did, you can come to our forums and live Zoom sessions and let us tell you exactly what to do.

2. Teaching your puppy the skills they need to stop biting. If you wait until it’s 6pm when your pup is in Hyper Attack Mode and then wave a toy at them or tell them to sit… it’s not going to work.

You gotta teach them the skills that will make them capable of playing with toys or following commands when they’re in a crazy bitey mood.

Over time, the biting calmed down

Vinny began to not just tolerate cuddling and affection, but actively seek it out!

“Vinny has great bite inhibition now,” Kathryn wrote when he was 18 months old. “He rarely even puts his teeth on me intentionally. Things aren’t perfect, but they’re really good. He’s sweet, exuberant, full of fun and curiosity.”

How it’s going: from land shark to best friend

Now, Vinny is a respectable young man. Kathryn did an amazing job with him. And she’s been kind enough to help out other puppy parents in our community, offering encouragement and advice based on her experiences:

Screenshot of a forum response from Kathryn that reads: Hi [blank], you are in good hands with Jake, and there is lots of helpful material on this site. I just wanted to let you know that I also had a land shark puppy. My boy, Vinny, is now 2.5 years old and a wonderful pup, but our early months together were really hard (85%+ due to the biting) and I was anxious a lot of the time.

What can you learn from this?

Puppy biting isn’t always teething or play

Especially when it’s this extreme, it’s a sign of frustration, confusion, or exhaustion (or a history of all three, like in Vinny’s case). It’s not aggression; more like a tantrum.

Handling can be taught (and even enjoyed!)

With trust-building and the right approach, many puppies who start out hating being touched can learn to appreciate it.

There’s no one single training exercise that will resolve this

For these extra bitey babies, we have to change things across multiple areas of their life. Which is easier than it sounds, but it’s not as simple as “do this one simple trick to stop biting instantly!”

It’s not the tactic, it’s how (and when) you use it

All the tactics you’ve tried and had no luck with (redirection, toys, ignoring them, etc) CAN still work, but only when you know which one to use in a given moment.

Without the right combination of exercise, enrichment, and rest, ANY training tactic will just add fuel to the fire

Puppies who are overtired or understimulated bite the hardest. Meeting needs comes before training.

This is a lot easier when you have a team on your side

Kathryn didn’t muscle through this on her own.

Her situation quickly started improving once she had professional guidance (hi!) and the support of other puppy parents who got it.

[The Academy] came into my life at one of the most challenging times I’ve experienced and I believe that the courses and the guidance, support and reassurance you gave me were, in large part, responsible for my getting through it (and Vinny too!). And for that I am deeply grateful.

I also really appreciated the community I found with other academy members who were going through similar experiences – it was heartening to know I was not alone in my puppyhood trials.

One of the biggest reasons people end up rehoming their extra bitey babies is because they try to figure it all out on their own.

With only Google, the weirdly judgmental people of Reddit, and the Gremlins of Self-Doubt for company.

The sooner they stop trying to DIY it, the faster they get to the part where things feel easier and more fun.

You don’t need to go it alone.

It takes a village.

Find yours.

(We’ve got a spot saved for you in ours. Just sayin’)

.

Want to spend less time Googling, and more time making progress with your dog?

That’s what the 3 Lost Dogs Academy is for.

It’s a low-cost way to get ongoing help from actual dog trainers (hi, that’s us!), with whatever you’re working on. From the basics to the messy, complicated stuff no one talks about.

So if you’re sick of searching the hellscape of generic AI-written articles on Google or scrolling through dog trainer drama on InstaFaceTubeTok…

Come hang out with us. We’ll help you cut through the noise and figure out what actually works for you.