There is a moment, usually somewhere around week 12, when a previously well-behaved puppy turns into a tiny piranha. Table legs, your fingers, the corner of the couch, the strap of your favorite bag: everything is fair game. It feels personal. It is not. It is teething, and like every other developmental phase, it has a beginning, a middle, and a definite end.
This guide walks through the puppy teething timeline week by week, explains what is happening in the mouth at each stage, lists the relief tactics that actually work, flags the chews to avoid, and helps you tell normal teething from something that needs a vet. By the time you get to the end, the chewing will make a lot more sense, and you will have a plan.
The Two Sets of Teeth
Puppies, like human babies, get two sets of teeth. The first set, deciduous or "baby" teeth, are sharp little needles built for a short working life. The second set, the permanent or "adult" teeth, are larger, blunter, and built to last decades. The transition from one to the other happens in a remarkably tight window, usually entirely within the first six to seven months of life.
A typical puppy ends up with 28 baby teeth and, eventually, 42 adult teeth. The extras in the adult set are mostly molars in the back of the mouth, which baby teeth never had to make room for.
Week-by-Week Timeline
Weeks 3 to 4: First Baby Teeth Emerge
The first deciduous teeth, usually the incisors at the front, push through the gums while the puppies are still nursing. Most owners do not see this stage because the puppies are still with the breeder. Mom certainly notices, and this is often the point at which she starts weaning.
Weeks 6 to 8: Full Set of Baby Teeth
By the time most puppies leave for their new home, all 28 baby teeth are typically in. The canines (those long, needle-sharp fangs) are usually the last to come through. This is the stage where new owners discover that puppy bites genuinely hurt; baby teeth are sharper than adult teeth on purpose, because they have to do more work with less jaw strength.
Chewing at this stage is mostly exploratory. The puppy is using their mouth to learn about the world, not to soothe pain. Standard bite inhibition training applies here; redirect to appropriate chew toys and yelp or disengage when the bite is too hard.
Weeks 8 to 12: The Calm Before the Storm
This is the honeymoon period. All baby teeth are in, none are loose yet, and chewing is largely about exploration and play. This is also the stage where many new owners think they have lucked out and got a non-chewer. They have not. The chewing storm is two to four weeks away.
Use this window to introduce a variety of chew toy textures and to start basic dental care routines like a finger-brush and a taste of canine toothpaste. The earlier brushing becomes part of the routine, the easier the adult-mouth years will be.
Weeks 12 to 16: Incisors Start Falling Out
The first baby teeth, usually the small front incisors, start to loosen and drop out somewhere between week 12 and week 16. You may find tiny rice-grain-sized teeth on the floor, in the food bowl, or stuck in a chew toy. Many owners never find a single one because puppies routinely swallow them with no harm done.
This is the start of what most people mean when they say "teething." Adult teeth are erupting underneath, pushing the baby teeth out, and the gums are genuinely sore. Expect a noticeable uptick in chewing intensity, occasionally a tiny streak of blood on a toy or in the water bowl (normal in small amounts), and sometimes a few days of reduced appetite or willingness to chew their kibble.
Weeks 16 to 20: Premolars and Canine Roots Loosening
By month four to five, the larger premolars in the back of the mouth and the prominent canines start the same loosening-and-replacing process. Because these teeth are bigger and the adult replacements are even bigger, this stage tends to be the most uncomfortable and corresponds to peak chewing intensity for most puppies. If you are going to lose furniture to teething, this is when it will happen.
This is also the stage where bite inhibition training that you started at 8 weeks pays off. A puppy who learned soft mouth at 9 weeks will not gnaw your hand bloody at 18 weeks; they will still chew, but they will know the difference between you and the chew toy.
Months 5 to 6: Adult Canines and Molars Erupt
The adult canines come through, followed by the molars at the very back of the mouth (the only teeth that did not have baby predecessors). Many owners notice a sudden refusal to play with rope tugs or hard nylon chews during the canine eruption window; the gums around those long teeth are particularly sore. Switch to softer textures for a couple of weeks and rotate back to firmer chews when comfort returns.
Months 6 to 7: Full Adult Set, 42 Teeth
By around seven months, most puppies have all 42 adult teeth, and the worst of the chewing pressure subsides. Chewing does not stop, and should not stop; chewing is a normal lifelong dog behavior. But it does drop sharply in intensity, and the indiscriminate "anything in reach" phase is over.
This is when the dental care habits you have been building become long-term maintenance. Daily or every-other-day brushing, appropriate dental chews, and regular vet dental checks for the rest of the dog's life.
Signs Your Puppy Is in Teething Pain
Not every puppy advertises teething pain clearly. Some get visibly clingy and whiny; others just chew with a new desperation. Watch for:
- A sudden increase in chewing intensity, especially on hard surfaces like baseboards, table legs, and corners of stair steps.
- Drooling more than usual, sometimes with a faint pink tinge.
- Tiny blood spots on chew toys, water bowls, or the floor. Small amounts are normal during baby tooth shedding.
- Reduced enthusiasm for kibble, particularly hard, large-piece kibble. Some puppies briefly prefer wet food or soaked kibble during peak weeks.
- Pawing or rubbing at the face.
- Reluctance to play tug or fetch with hard toys.
- Slight low-grade irritability or restlessness, especially in the evening. This is also when teething overlaps most visibly with training; if your normally responsive puppy seems to be tuning you out during peak eruption weeks, why is my puppy not listening walks through how pain quietly erodes focus.
- A faint, slightly metallic breath smell that fades when the new teeth fully erupt.
None of these are emergencies on their own. The vet flags come below.
Relief Tactics That Actually Work
Teething pain is real, and there are good options for taking the edge off. The best ones combine cold (numbs the gums), texture (massages the gums as the puppy chews), and engagement (gives the puppy something appropriate to focus on).
Frozen Options
Cold is the most reliable relief, and free or close to it.
- Frozen wet washcloth. Soak a clean washcloth in water (or low-sodium chicken broth if your vet okays it), wring it out, twist it into a rope, and freeze for an hour. The cold and the chewable texture together are excellent. Supervise, and toss it once it gets soft and starts to fray.
- Frozen baby carrots. Small whole carrots, frozen straight. Crunchy, low-calorie, and most puppies love them. Skip for very small breeds where a whole carrot is a choking risk; cut into appropriately sized pieces.
- Stuffed and frozen Kong. A classic. Stuff a Kong with wet puppy food, plain unsweetened yogurt, mashed banana, or a smear of dog-safe peanut butter (no xylitol, ever), then freeze. Provides 20 to 40 minutes of relief and engagement.
- Frozen rubber teething toys. Many manufacturers make rubber chews designed to be filled with water and frozen. Choose puppy-specific sizing.
Appropriate Chew Toys by Stage
- Soft rubber chews (Kong Puppy, Nylabone Puppy Teething) for the 12 to 16 week incisor stage.
- Medium-firmness rubber and softer rope toys for the 16 to 20 week premolar stage.
- Larger, more durable rubber chews as the adult set comes in.
Rotate three or four toys at a time and put others away for a week. Novelty matters; a "new" toy is more engaging even if it is one your puppy has seen before. For a fuller breakdown of which chew categories are worth buying upfront versus which ones to add later, see our puppy supplies checklist.
Gum Massage
Some puppies tolerate, and even enjoy, a gentle gum massage with a clean finger. This pairs well with the toothpaste introduction phase and starts building tolerance for the brushing routine that will continue for the rest of their life.
Engagement and Exercise
Tired puppies chew less destructively. Adequate physical and mental stimulation is not a teething tactic per se, but it dramatically reduces the appetite for problem chewing. Sniffy walks, puzzle feeders, training sessions, and short structured play all help. Our puppy exercise and mental stimulation guide breaks down age-appropriate amounts.
What NOT to Give a Teething Puppy
The chew industry sells a lot of products that are either inappropriate for puppies or actively dangerous for any dog. Avoid:
- Cooked bones of any kind. They splinter into sharp shards that can puncture the intestinal tract. This is non-negotiable.
- Antlers, hooves, and very hard nylon chews. These are tooth-fracturing hard. A useful rule from veterinary dentists: if you cannot dent it with a fingernail and would not want to be hit in the kneecap with it, it is too hard for any dog's teeth. Adult dogs fracture canine and carnassial teeth on these chews routinely, and puppy teeth are even more vulnerable.
- Rawhide. Choking and intestinal blockage risk are significant. Many veterinarians recommend against it entirely.
- Tennis balls for extended chewing. The abrasive fuzz wears down enamel surprisingly fast.
- Ice cubes. Same fracture risk as antlers, especially for the larger pre-molars and molars.
- Sticks from the yard. Splinters, bacterial contamination, and the occasional impalement.
- Anything smaller than the puppy's mouth. Choking hazard.
- Children's toys, especially stuffed toys with small parts, plastic eyes, or squeakers small enough to swallow whole.
If a chew has a known reputation for fractures (a quick search of "[chew name] fractured tooth" usually reveals it), skip it.
When to Call the Vet
Most teething is uncomfortable but unremarkable. The following are not.
- Retained baby teeth. If you can still see a baby tooth (most commonly a baby canine) next to a fully erupted adult tooth at 6 months or later, that baby tooth needs to come out. Retained baby teeth crowd the adult set, cause misalignment, and trap food and bacteria. Most are extracted during the spay or neuter procedure under the same anesthesia, so flag it at the pre-op exam.
- Bleeding beyond a small pink tinge. A few drops on a chew toy is normal during shedding. Active bleeding, large blood streaks in the water bowl, or anything more than light pink is worth a same-day call.
- Fever (above 103.5 degrees Fahrenheit rectally) or other illness signs. Teething does not cause fever in dogs the way it does in human myth; if there is a fever, something else is going on.
- Refusing to eat for more than 24 hours. A short appetite dip during peak teething days is common; a full day of refused food is not.
- Visible gum swelling, pus, or a lump along the gumline. Could indicate an abscess or an erupting tooth that is stuck.
- A bad rotten-egg or sulfurous breath smell that persists. Normal teething breath is mild and metallic at most.
- A baby tooth that has been loose for more than a few weeks without falling out, or one that is dangling and uncomfortable.
- Crooked adult teeth, severe over- or under-bite changes, or teeth growing in directions that concern you. Some occlusion issues can be addressed early; others cannot, but a vet should know.
How Chewing Maps to Teething
If you are tracking your puppy's behavior closely, you may notice that chewing intensity is not random. It surges during specific weeks (typically 12 to 20), drops slightly during quieter eruption phases, and then drops sharply once the adult set is fully in.
Some owners find it useful to keep a running log of notable chewing or biting moments alongside potty and sleep data so they can see the patterns. If you are already using pawpy, our free puppy tracker for iOS and Android, you can add a quick note to your daily log when a chewing surge hits; over a few weeks the timeline will show whether your "she chewed everything yesterday" memory matches reality, and whether a particular week was an outlier. Most owners discover that the chaos really does cluster around the canine-eruption window in months four to five, and that knowledge alone helps them stay patient.
For more on managing the chewing behavior itself, and how to tell teething chewing from anxiety-driven chewing, see our puppy behavior problems guide on biting, anxiety, and chewing. If you want safe edible options that double as training treats during this stage, our puppy treats and supplements guide covers what works at different ages.
A Realistic Outlook
Teething is genuinely uncomfortable for your puppy and genuinely annoying for you. Both of these are true and neither is permanent. The window from the first wobbly incisor to the last molar fully erupted is roughly 12 to 16 weeks, give or take, and the worst of it is concentrated in a 4 to 6 week chunk in the middle.
Put away the things you cannot afford to lose. Keep frozen Kongs rotating through the freezer. Have three or four appropriate chews within reach at all times so you can redirect rather than scold. Build the brushing habit before the adult set is fully in. Watch for retained baby teeth at the 6 month mark and get them addressed at spay or neuter. And trust that the cheerful, less-destructive seven-month-old version of your puppy is already on their way.