Puppy Teething Timeline: What to Expect and How to Help

Written By: Ian @ World Deer

Puppies teethe in two waves: 28 baby teeth erupt between about 3 and 6 weeks of age, and then — the part owners actually live through — those baby teeth fall out and 42 adult teeth come in between roughly 3 and 6 months. During those months your puppy’s mouth is sore, itchy, and looking for things to chew, which is why your shoelaces, chair legs, and forearms are suddenly on the menu. The fix isn’t stopping the chewing — chewing is the treatment — it’s directing it at the right targets and knowing which few situations need a veterinarian instead of a chew toy.

The puppy teething timeline

Age	What’s happening in the mouth	What you’ll notice
0–3 weeks	No teeth; nursing only	Nothing — this stage happens at the breeder’s
3–6 weeks	28 deciduous (baby) teeth erupt	Needle-sharp teeth; litters begin weaning
8–12 weeks	Full set of baby teeth in use	The infamous “piranha phase” of play-biting with tiny sharp teeth
12–16 weeks	Baby incisors loosen and fall; adult incisors erupt	Tiny teeth on the floor (or swallowed — harmless), spots of blood on toys, increased chewing
4–5 months	Adult canines, premolars arriving	Peak teething discomfort; drooling, chewing everything in reach
5–6 months	Molars erupt; last baby teeth out	Chewing urge still strong; mouth settling down
6–7 months	All 42 adult teeth in place	Teething over — though adolescent recreational chewing continues well into year two

Typical ranges; small breeds often run a bit later, and individual variation is normal.

Two reassuring notes up front. Finding baby teeth is optional — puppies swallow most of them harmlessly, and many owners never see a single one. And small streaks of blood on a chew toy during the swap-over months are completely normal; the gums bleed briefly as teeth shed, the way children’s do.

The right chew outlet makes teething far easier — see our picks for the best puppy toys.

How to tell your puppy is teething

Chewing intensity spikes — especially on cool, firm, or textured objects
More drooling than usual, sometimes tinged pink
Red, swollen gums, visible when you gently lift a lip
Missing or wobbly teeth, or a gap where an incisor was yesterday

Mouthing more, eating slightly slower — some puppies briefly prefer softened food when molars are erupting
Mild crankiness — a sore mouth shortens anyone’s fuse

What teething should not cause: refusing food outright for more than a day, a fever, significant bleeding, facial swelling, or a puppy that seems generally sick. Those go beyond teething — see the vet section below.

How to help: relief that actually works

Cold is your best friend

Cold numbs sore gums, which is why the best teething aids are chilled. Proven owner favorites: a wet washcloth twisted and frozen (supervise, and take it away once it thaws to a shreddable rag), rubber puppy toys chilled in the freezer, frozen food-stuffable toys with a little plain wet food or unsweetened plain yogurt inside, and frozen carrot chunks for supervised gnawing — large enough that they can’t be swallowed whole. Even ice cubes work for many puppies, floated in the water bowl or offered by hand.

Stock a proper chew rotation

Offer several textures — soft rubber, firmer rubber, rope, plush — and rotate a few toys at a time so novelty stays high. The safety rules matter more than the brand names: a chew should flex slightly under a thumbnail (veterinary dentists warn that objects harder than teeth — antlers, hooves, bones, hard nylon — crack teeth, including brand-new adult ones), it should be too big to swallow, and anything that’s shedding chunks gets retired. Skip cooked bones entirely, and treat rawhide with caution — chunks are a choking and blockage risk. Whatever edible chews you use, they count as food; our dog nutrition hub covers which human foods are safe to stuff into toys and which never are.

Manage the environment, redirect the mouth

A teething puppy will chew — the only question is what. Puppy-proof ruthlessly: shoes away, cords covered or blocked, valuable furniture gated off, and a legal chew always within reach in every room the puppy uses. When teeth land on the wrong target, don’t punish — calmly trade for a legal chew and praise the switch. Punishment doesn’t reduce the biological need to chew; it just teaches the puppy to chew where you can’t see. Confinement tools help enormously here: a puppy-proofed pen or a well-loved crate (see our crate training guide) with a frozen stuffed toy keeps unsupervised hours from becoming demolition hours.

Protect your hands — and the schedule

Teething overlaps exactly with the play-biting months, and a sore mouth makes bitey play worse. The same rules apply: hands are never chew toys, redirect to a legal target, and remember that a huge share of “worst biting ever” evenings are actually an overtired puppy that missed a nap — teething puppies still need their 18-plus hours, on a real sleep schedule.

What not to use

No human pain medication, ever — common human painkillers are toxic to dogs, and no medication of any kind should be given without your veterinarian’s explicit direction.
No numbing gels made for human babies — ingredients like benzocaine are unsafe for puppies, and “natural” teething gels are unregulated and unproven.
No ultra-hard chews — antlers, hooves, bones, rocks (some puppies try), or hard nylon for a teething mouth.

No frozen anything from the toxic-foods list — grapes, anything sweetened with xylitol, onion-seasoned leftovers. When in doubt, check before you stuff.

When teething needs a veterinarian

Most puppies teethe without a single complication, but a few situations genuinely need professional eyes — and most have a deadline attached, because tooth problems fixed early are simple and fixed late are surgical:

Retained baby teeth. If an adult tooth has erupted and the baby tooth in the same spot is still firmly in place — the classic “shark teeth” double row, most common with the canines in small breeds like Chihuahuas and Poodles — the baby tooth usually needs extraction, often scheduled with the spay or neuter. Left in place it traps food, and can force the adult tooth into a bad position.

Misaligned teeth causing pain. A tooth striking the roof of the mouth or another tooth needs assessment; caught early, options are much better.
A broken tooth — baby or adult. Fractured teeth expose the pulp, hurt, and can abscess; “it’ll fall out anyway” is not a plan, because an infected baby tooth can damage the adult tooth developing beneath it.
Refusing food for more than a day, fever, facial swelling, significant or persistent bleeding, or a generally unwell puppy. Teething is uncomfortable, not debilitating — a debilitated puppy has something else going on.

No adult teeth arriving on schedule — if the timeline has clearly stalled, an X-ray can check whether adult teeth are present and impacted.

Your vet will check the bite at routine puppy visits anyway — but pointing out anything from this list between visits is never an overreaction.

Breed and size differences worth knowing

The timeline table is written for the average puppy, but size bends it. Toy and small breeds often teethe a little later and are far more prone to retained baby teeth — their small jaws are crowded, and the deciduous canines in particular love to overstay. If you have a toy breed, make lip-lifting checks a weekly habit from four months on, and expect your vet to look closely at the bite at every visit. Large and giant breeds tend to move through the swap earlier and chew with vastly more force, which changes your toy shopping: a chew that’s safe for a Pomeranian can be a swallowable chunk for a five-month-old Rottweiler, so size everything up and retire toys at the first sign of shedding pieces.

Flat-faced breeds — Bulldogs, Pugs, Frenchies, Boston Terriers — deserve their own sentence: the same 42 teeth have to fit into a dramatically shortened jaw, so crowding, rotated teeth, and retained baby teeth are near-routine, and early dental checks matter more, not less. None of this changes the home care; it changes how vigilant you are and how quickly you flag oddities to your vet.

Start dental habits now (your future self says thanks)

The teething months are the perfect window to build the habits that protect those 42 new teeth for life. Handle the muzzle and lift the lips daily, pair it with treats, and introduce a puppy toothbrush and dog toothpaste (never human toothpaste — the fluoride and sweeteners aren’t dog-safe) in short, positive sessions. Keep it cheerful and brief: a few seconds of brushing followed by a treat beats a wrestling match that teaches the puppy to dread the sight of the brush. Most dogs show some dental disease by age three; the ones that don’t are mostly the ones whose owners started brushing when the teeth were new — and the handling practice pays a second dividend every time a vet, groomer, or curious child reaches for your dog’s face for the rest of its life.

Common questions

How long does puppy teething last?

The uncomfortable adult-teeth phase runs from roughly 12 weeks to 6 months of age, peaking around 4 to 5 months, and virtually all puppies have their full adult set by 6 to 7 months. Note the catch: the urge to chew doesn’t end with teething. Adolescent dogs chew recreationally well into their second year, so keep the chew rotation going long after the last baby tooth is gone.

My puppy swallowed a baby tooth — should I worry?

No. Puppy teeth are tiny, and swallowing them — usually during a meal or play — is the normal fate of most of them. They pass without trouble. That’s why many owners never find a single tooth despite a full changeover happening in their living room.

Is bleeding from the mouth normal during teething?

Small amounts, yes — pink-tinged drool or little blood spots on toys when a tooth sheds are expected and stop quickly. What’s not normal: steady or recurring bleeding, blood without an obvious lost tooth, swelling, or a puppy pawing at a painful mouth. Those earn a vet call.

Do puppies stop biting after teething?

Teething and play-biting are related but separate: sore gums make mouthing worse, but puppies bite in play because that’s how puppies play — teeth or no teeth. So the biting eases as teething ends and as your training teaches bite inhibition and better games, not automatically on the day the last molar arrives. Keep redirecting, keep the naps coming, and the two curves decline together.