When Do Dogs Stop Teething? A Complete Timeline and Science Guide
Learn exactly when dogs stop teething, the science behind puppy tooth development, breed variations, and practical tips to manage chewing behavior.
The Short Answer: When Do Dogs Stop Teething?
Most dogs stop teething by 6 to 7 months of age, when all 42 adult teeth have fully erupted. The teething process begins around 3–6 weeks with deciduous (baby) teeth, transitions to adult teeth starting at 12–16 weeks, and typically concludes by 24–28 weeks. Small and toy breeds may take 1–2 months longer due to jaw size constraints, while giant breeds sometimes complete eruption slightly earlier relative to their overall growth timeline.
The Full Puppy Teething Timeline: Week by Week
Understanding the precise sequence of tooth eruption helps you anticipate chewing surges, recognize problems early, and know when to schedule veterinary dental checks. Here is the clinically observed timeline based on veterinary dental references from the Merck Veterinary Manual:
| Age Range | Stage | What's Happening | Teeth Count |
|---|---|---|---|
| 3–6 weeks | Deciduous eruption | Baby incisors and canines push through gums | 28 baby teeth total by week 6–8 |
| 6–8 weeks | Full deciduous set | All 28 deciduous teeth present (incisors, canines, premolars — no molars) | 28 |
| 12–16 weeks | Deciduous shedding begins | Adult incisors erupt, pushing out baby incisors; you may find tiny teeth on the floor | Mixed dentition |
| 16–20 weeks | Canine transition | Adult canines erupt alongside or replace baby canines; peak chewing intensity | Mixed dentition |
| 20–24 weeks | Premolar and molar eruption | Adult premolars and first molars push through; gums may appear swollen or mildly bloody | Approaching 42 |
| 24–28 weeks | Full adult dentition | All 42 adult teeth should be fully erupted and seated; teething discomfort resolves | 42 |
| 7–9 months | Post-eruption settling | Teeth settle into final occlusion; jaw continues growing in larger breeds | 42 |
If your puppy reaches 8 months and still has retained baby teeth alongside adult teeth — particularly the canines — this is called persistent deciduous teeth and requires veterinary evaluation. Left untreated, retained teeth cause malocclusion, periodontal disease, and abnormal jaw development.
The Science of Tooth Eruption: What's Happening Inside Your Puppy's Jaw
Physiological Mechanism of Teething
Tooth eruption is driven by a cascade of biological processes, not simply "teeth growing longer." The actual mechanism involves several coordinated events:
- Dental follicle signaling: The dental follicle surrounding each developing tooth releases cytokines and growth factors (including epidermal growth factor and interleukin-1α) that trigger osteoclast activity — cells that resorb bone above the erupting tooth, creating an eruption pathway.
- Root elongation: As the tooth root elongates, it generates apical growth force that pushes the crown toward the oral surface. Research published in the Journal of Veterinary Dentistry confirms this is the primary driving force, not periodontal ligament contraction as previously theorized.
- Deciduous tooth resorption: The permanent tooth bud positioned beneath each baby tooth triggers odontoclast activity that resorbs the baby tooth's root. When this process is complete, the crown loses its anchor and falls out — often swallowed by the puppy, which is harmless.
- Gingival remodeling: The gum tissue above the erupting tooth undergoes controlled inflammation and thinning, mediated by prostaglandins and matrix metalloproteinases. This is why puppy gums look red and swollen during active eruption — it's a normal inflammatory response, not infection.
The discomfort puppies experience comes from gingival stretching and inflammatory mediator release, not from the tooth "cutting" through tissue. This distinction matters because it explains why cold items (which reduce inflammation and numb nerve endings) provide more relief than hard items that merely apply pressure.
Evolutionary Context: Why Teething Exists in Canids
From Wolf Pups to Your Living Room
The two-phase dentition system (deciduous then permanent) is ancestral to all canids and evolved approximately 60–70 million years ago in early placental mammals. Here's why this system persists:
Jaw-size mismatch: Wolf pups need functional teeth for weaning and learning to process solid food by 5–7 weeks, but their juvenile jaws are far too small to accommodate adult-sized teeth. Deciduous teeth are proportionally scaled to juvenile jaw dimensions — smaller, sharper, and more needle-like than adult teeth.
Survival pressure: In wild canids, pups that cannot process solid food efficiently by 8–10 weeks face nutritional deficits during a critical growth window. The deciduous dentition ensures pups can tear meat and crush bone fragments alongside the pack during this vulnerable period.
Learning scaffolding: The sharp deciduous teeth serve a behavioral function: they teach bite inhibition. Littermates yelp and withdraw when bitten too hard by needle-sharp baby teeth, providing immediate feedback. This feedback loop is one reason early litter separation (before 8 weeks) correlates with increased bite inhibition problems in pet dogs.
In domestic dogs, this evolutionary program runs identically — your Labrador puppy's jaw is following the same eruption blueprint as a gray wolf pup, even though the selective pressures have shifted entirely.
Why Do Dogs Chew So Destructively During Teething?
The intense chewing behavior during teething isn't random destruction — it serves physiological and neurological purposes:
Pain relief through counter-pressure: Chewing applies mechanical pressure to inflamed gums, which stimulates large-diameter nerve fibers that partially override pain signals via the gate control theory of pain modulation. Your puppy chews your shoe because the pressure literally reduces their discomfort.
Eruption facilitation: Mechanical abrasion from chewing helps thin the gingival tissue overlying erupting teeth, assisting the natural eruption pathway. In wild canids, chewing on bones and hides serves this function naturally.
Dopamine-mediated reinforcement: Chewing triggers dopamine release in the canine brain, creating a positive feedback loop. During teething, the combination of pain relief plus dopamine reward makes chewing intensely reinforcing — which is why puppies seem compulsively driven to chew during peak eruption windows (16–24 weeks).
This is entirely normal behavior. The question isn't how to stop it, but how to redirect it to appropriate outlets.
Breed Variations in Teething Timelines
Not all dogs follow the standard timeline precisely. Breed size, skull shape, and genetic factors create meaningful variation:
| Breed Category | Typical Completion Age | Common Variations | Special Concerns |
|---|---|---|---|
| Toy breeds (Chihuahua, Yorkshire Terrier, Pomeranian) | 7–9 months | Delayed eruption common; retained deciduous teeth in 30–50% of individuals | Crowding in small jaws; high risk of malocclusion requiring extraction |
| Small breeds (Beagle, French Bulldog, Cocker Spaniel) | 6–8 months | Brachycephalic breeds show higher rates of rotated or impacted premolars | Flat-faced breeds need dental radiographs at spay/neuter to check for unerupted teeth |
| Medium breeds (Border Collie, Australian Shepherd, Bulldog) | 6–7 months | Generally follow standard timeline closely | Standard monitoring; dental check at 6-month vet visit |
| Large breeds (Labrador, Golden Retriever, German Shepherd) | 5.5–7 months | May complete eruption slightly earlier; larger jaw provides ample space | Stronger bite force during teething means more destructive chewing; upgrade to heavy-duty chew items |
| Giant breeds (Great Dane, Mastiff, Saint Bernard) | 6–8 months | Jaw growth continues well past tooth eruption; spacing may change as jaw matures | Monitor occlusion changes through 12 months as jaw completes growth |
Brachycephalic breeds deserve special attention. Their shortened skulls compress the dental arcade, creating crowding that increases the risk of retained deciduous teeth, rotated adult teeth, and periodontal pockets. The American Kennel Club recommends a veterinary dental examination for all brachycephalic puppies at the time of spay or neuter (typically 6 months), including dental radiographs to identify unerupted or impacted teeth before they cause cyst formation.
Practical Teething Management: What Works (and What Doesn't)
Effective Strategies with Specific Recommendations
Cold therapy items (peak effectiveness during 12–24 weeks):
- Wet a clean cotton washcloth, twist it into a rope, freeze for 2 hours, and offer under supervision. The cold reduces gingival inflammation while the texture provides counter-pressure. Replace every 2–3 weeks as fibers break down. Cost: essentially free.
- KONG Puppy teething sticks (specifically the pink or blue rubber formula designed for developing teeth) can be stuffed with plain pumpkin puree and frozen. The softer rubber won't damage developing tooth roots the way hard nylon chews can. Price range: $8–$14 depending on size.
- Carrots chilled in the refrigerator (not frozen solid) provide edible, low-calorie chewing satisfaction. A medium carrot contains roughly 25 calories — safe for repeated offering without disrupting daily caloric intake for most puppies over 15 lb.
Environmental management:
- Puppy-proof by removing shoes, cords, and remote controls from floor level. Use bitter apple spray (such as Grannick's Bitter Apple, $7–$10 for 8 oz) on furniture legs and baseboards — apply every 48 hours during peak teething as the bitter compound degrades with air exposure.
- Rotate chew toys every 2–3 days to maintain novelty. Puppies habituate to individual items quickly; a rotation of 6–8 items offered in sets of 3 maintains engagement without requiring constant purchasing.
- Confine unsupervised puppies to a crate or puppy-proofed pen with a single appropriate chew item. This prevents rehearsed destructive chewing from becoming a habit that persists past the teething phase.
What to avoid:
- Hard nylon bones and antlers: These exceed the fracture resistance of developing puppy teeth. Veterinary dentists report that puppy tooth fractures from antlers and hard nylon chews are among the most common preventable dental injuries. The developing tooth structure is less mineralized than adult enamel and more susceptible to slab fractures.
- Ice cubes for small breeds: While ice provides cold therapy, the hardness can crack teeth in toy breeds. Offer crushed ice or slush instead for puppies under 15 lb.
- Rope toys unsupervised: Ingested rope fibers can cause linear foreign body obstruction — a surgical emergency costing $2,000–$5,000. Always supervise rope toy use and discard when fibers begin fraying.
Common Teething Myths Debunked
| Myth | Fact |
|---|---|
| "Puppies swallow their baby teeth and it's dangerous" | Swallowed deciduous teeth pass harmlessly through the GI tract in 95%+ of cases. The teeth are small, partially resorbed, and dissolve further in stomach acid. This is normal and expected. |
| "Teething causes diarrhea and fever" | No peer-reviewed evidence links tooth eruption to systemic illness. Diarrhea during teething age (3–6 months) correlates with dietary transitions, parasite exposure, and stress from environmental changes — not eruption itself. Fever above 103°F (39.4°C) during teething age warrants veterinary investigation for infection, not attribution to teething. |
| "You should pull out loose baby teeth yourself" | Never extract teeth at home. If a deciduous tooth is loose but not falling out within 1–2 weeks while the adult tooth is visibly erupting alongside it, this indicates the root hasn't fully resorbed and requires veterinary extraction under anesthesia to prevent damage to the developing adult tooth. |
| "Teething puppies need less exercise because they're uncomfortable" | Maintain age-appropriate exercise (5 minutes per month of age, twice daily). Physical activity provides mental stimulation that reduces stress-related chewing. A tired puppy chews less destructively than an under-stimulated one. |
| "Once adult teeth are in, chewing stops" | Chewing is a lifelong canine behavior driven by jaw muscle maintenance, dental cleaning, and stress relief — not solely by teething discomfort. Expect reduced but ongoing chewing through 18–24 months as jaw muscles and bones mature. |
When Teething Signals a Problem: Red Flags to Watch For
Contact Your Veterinarian If You Observe:
- Retained deciduous teeth: Baby tooth remains firmly in place alongside the erupted adult tooth for more than 2 weeks. This is especially common in toy breeds and requires extraction to prevent malocclusion and periodontal disease.
- Missing adult teeth: If an adult tooth hasn't erupted by 8 months, dental radiographs are needed to determine if the tooth is congenitally absent, impacted, or developing an eruption cyst. Impacted teeth can form dentigerous cysts that destroy surrounding bone.
- Severe oral bleeding: Mild blood-tinged saliva during active eruption is normal. Active dripping or pooling of blood indicates trauma, clotting disorder, or severe gingival injury requiring evaluation.
- Refusal to eat for more than 24 hours: While puppies may eat slightly less during peak eruption days, complete food refusal beyond 24 hours suggests pain severity or illness beyond normal teething.
- Facial swelling or asymmetry: Unilateral swelling suggests tooth root abscess, eruption cyst, or foreign body penetration — not normal teething inflammation.
- Foul oral odor: Mild "puppy breath" is normal; putrid odor suggests infection, necrotic tissue, or a foreign body lodged between teeth.
Always consult your veterinarian for dental concerns. Puppy dental issues addressed early prevent costly orthodontic or surgical interventions later — a retained tooth extraction at 6 months costs $50–$150 per tooth, while treating resulting periodontal disease or malocclusion at 2–3 years can exceed $1,500.
How Is Dog Teething Different from Human Teething?
The fundamental process is homologous — both species develop deciduous then permanent dentition through the same cellular mechanisms. But the practical differences are significant:
- Timeline compression: Humans take 6–7 years to transition from first deciduous tooth to full permanent dentition (excluding wisdom teeth). Dogs compress this entire process into approximately 5–6 months. This rapid timeline means problems develop and progress faster in puppies — a 2-week delay in addressing a retained tooth in a puppy is proportionally equivalent to a months-long delay in a child.
- Tooth count: Humans have 20 deciduous and 32 permanent teeth. Dogs have 28 deciduous and 42 permanent teeth — the additional teeth are primarily premolars and molars adapted for shearing meat and crushing bone, reflecting their carnivorous ancestry.
- Root resorption mechanism: In humans, baby tooth roots resorb gradually and teeth typically fall out with minimal bleeding. In dogs, the process is similar but the teeth are often swallowed during eating or play rather than falling out and being noticed. Owners frequently never see a single baby tooth — this is completely normal.
- Pain expression: Human infants cry and fuss visibly during teething. Puppies are more stoic — they may chew more intensely, eat slightly less, or seem mildly irritable, but overt pain vocalization is uncommon. This stoicism can lead owners to underestimate their puppy's discomfort.
Frequently Asked Questions
Is it normal for my 4-month-old puppy to have bad breath during teething?
Mild metallic-smelling breath is normal during active tooth shedding — it comes from small amounts of blood in the mouth as deciduous teeth loosen. However, putrid or rotten-smelling breath is not normal and may indicate infection, a retained tooth root, or a foreign object trapped in the gum. If the odor is strong enough to notice from across the room, schedule a veterinary check.
My puppy is 7 months old and still chewing everything. Is he still teething?
By 7 months, active tooth eruption is typically complete. Continued intense chewing at this age is usually behavioral rather than teething-driven. Common causes include insufficient mental stimulation, anxiety, habit reinforcement (if destructive chewing was inadvertently rewarded with attention during the teething phase), or boredom. Increase structured exercise, introduce food puzzle toys, and ensure 15–20 minutes of daily training sessions to redirect this energy. If chewing remains compulsive, consult a certified positive-reinforcement trainer or veterinary behaviorist.
Can I start brushing my puppy's teeth during teething?
Yes, and you should — but gently. Use a finger brush or soft infant toothbrush with enzymatic dog toothpaste (never human toothpaste, which contains xylitol or fluoride toxic to dogs). During active eruption weeks (12–24 weeks), brush only the surfaces away from erupting teeth to avoid causing pain that creates lifelong tooth-brushing aversion. Once all adult teeth are seated (around 7 months), transition to full brushing. According to the American Veterinary Medical Association, daily brushing is the gold standard for preventing periodontal disease, which affects over 80% of dogs by age 3.
My puppy's adult tooth came in behind the baby tooth. Will it self-correct?
Sometimes — if the baby tooth is already loose, it may fall out within 1–2 weeks and the adult tooth will drift into proper position. If the baby tooth is firmly rooted and shows no loosening after 2 weeks, veterinary extraction is recommended. The longer a retained deciduous tooth remains, the more the adult tooth is deflected into an abnormal position, potentially requiring orthodontic intervention or extraction of the malpositioned adult tooth later.
How much should I budget for puppy dental care during the teething year?
Budget $100–$400 for routine teething-year dental care: a 6-month dental check ($45–$85), potential retained tooth extractions ($50–$150 per tooth, 1–4 teeth common in toy breeds), appropriate chew toys ($40–$80), and a toothbrush starter kit ($10–$20). For brachycephalic breeds, add $150–$300 for dental radiographs at spay/neuter. These costs are minor compared to the $800–$2,500 cost of treating advanced periodontal disease or orthodontic correction in adulthood.
Beth Carrasco
All our authors care for dogs every day — read more of their work on the authors page.
