Introduction
This guide organizes puppy teething stages into four practical phases from birth through approximately 7 months of age. These phases are an easy way for owners to follow dental development rather than a standardized veterinary classification. Most dogs progress from having no erupted teeth at birth to having 28 deciduous teeth and, eventually, 42 permanent adult teeth.
This guide covers the complete teething process from the neonatal period through the arrival of permanent teeth, giving you a clear picture of what to expect at each stage. Whether you’re navigating the early weeks with a new puppy or deep in the peak puppy teething phase where everything you own seems to be a chew toy, this resource will help you respond effectively.
Here’s the direct answer many readers are looking for: puppies are born without erupted teeth, and their deciduous teeth generally begin appearing at approximately 3 to 5 weeks. Permanent teeth usually begin erupting around 4 to 5 months, and most dogs have their full permanent dentition by approximately 7 months. The exact timing varies among individual puppies.
By reading this guide, you will:
- Identify four practical puppy teething stages and understand what is happening in your puppy’s mouth
- Recognize common puppy teething symptoms and signs that require veterinary attention
- Implement stage-appropriate management strategies, including safer chew options
- Maintain age-appropriate training while accounting for possible mouth tenderness
- Know when teething usually ends and when dental development requires professional attention
Understanding Puppy Dental Development
Puppies are born without erupted teeth and depend on their mother’s milk or an appropriate milk replacer during the neonatal period. Deciduous teeth generally begin erupting at approximately 3 to 5 weeks, around the time gradual weaning commonly begins. Most puppies eventually develop 28 deciduous teeth before those teeth are replaced by a larger set of permanent teeth.
Baby Teeth vs. Adult Teeth Function
A puppy’s baby teeth, also called milk teeth or deciduous teeth, usually number 28 in total. These small, sharp teeth help puppies begin eating solid food and exploring their environment through their mouths.
Permanent teeth are larger, stronger, and more numerous. Most dogs develop 42 permanent teeth, including molars that are not present in the deciduous set. Although permanent teeth are stronger than baby teeth, they can still fracture when dogs chew bones, antlers, hooves, ice cubes, hard nylon products, or other rigid objects.
The Biological Process Behind Teething
As permanent teeth develop, pressure contributes to resorption of the deciduous tooth roots. The loosened baby teeth then fall out or may be swallowed harmlessly.
Mild gum tenderness, increased chewing, drooling, irritability, or small spots of blood on a toy may occur. Marked swelling, persistent bleeding, difficulty eating, facial swelling, or severe pain should not be assumed to be normal teething.
Understanding this process helps explain why a teething puppy may seek additional opportunities to chew. The behavior still requires supervision and redirection, but it does not mean your puppy is deliberately trying to destroy household items.
Four Practical Puppy Teething Stages
Each stage brings different physical changes and management needs. Knowing where your puppy falls on the timeline can help you set realistic expectations without treating the age ranges as rigid deadlines.
Stage 1: Toothless Newborn (0–3 Weeks)
Newborn puppies arrive without erupted teeth and are dependent on their mother or an appropriate milk replacer. Their eyes and ear canals begin opening during the first weeks, but puppies normally continue nursing beyond 2 weeks. Gradual weaning typically begins around 3 to 4 weeks and continues as puppies learn to eat an appropriate puppy diet.
There is no chewing or formal training at this stage. Breeders and caretakers may use brief, gentle handling for weighing, health checks, and routine care, provided the puppy remains warm and comfortable. Routine mouth manipulation is unnecessary for newborn puppies and should never interfere with nursing, rest, or maternal care.
Stage 2: Baby Teeth Eruption and Early Mouthing (3–12 Weeks)
Deciduous teeth generally begin erupting at approximately 3 to 5 weeks. Most puppies develop 28 baby teeth, including incisors, canines, and premolars, by approximately 6 to 8 weeks. Those teeth normally remain in place until the permanent teeth begin replacing them several weeks later.
During this period, puppies begin eating solid food, exploring with their mouths, and playing with littermates. Pauses and reactions during littermate play may contribute to early bite inhibition, but owners must continue teaching gentle interaction through supervision, redirection, appropriate toys, and calm pauses when biting becomes too hard.
Formal obedience is not the priority during the earliest part of this stage, but puppies are still learning from their surroundings and interactions. Gentle exposure, appropriate socialization, simple reward-based exercises, and positive associations with handling can support future puppy training success.
Stage 3: Teething Transition (Approximately 3½–6 Months)
During this stage, deciduous teeth loosen and permanent teeth begin erupting. Common signs may include increased chewing, drooling, mild gum tenderness, irritability, or small spots of blood on a toy. You may find baby teeth on the floor, although many are swallowed harmlessly.
Significant swelling, persistent bleeding, difficulty eating, or obvious pain requires veterinary attention rather than being dismissed as normal teething.
Permanent incisors commonly begin appearing around 4 months. First premolars and first molars may appear around 4 to 5 months, followed by canines and additional premolars around 5 to 6 months. The final molars may erupt between approximately 6 and 7 months. These are average ranges, and individual timing varies.
Increased chewing and mouthing may occur during this phase, but housetraining regression, loss of obedience, or major behavioral changes should not automatically be attributed to teething. Review your puppy’s routine, supervision, sleep, health, and training environment. Sudden or persistent changes may warrant veterinary or professional guidance.
Keep training sessions appropriate for your puppy’s individual engagement rather than following a fixed time limit. Brief, successful practice may be easier on uncomfortable days. If your puppy shows pain when taking food, avoids chewing, or struggles to eat, stop the session and contact your veterinarian.
Stage 4: Permanent Teeth Completion (Approximately 6–7 Months)
Most dogs have 42 permanent teeth by approximately 7 months, although individual eruption timing varies. The final molars are commonly among the last teeth to appear. Smaller breeds are more likely to experience retained deciduous teeth, but owners should monitor every puppy’s developing mouth.
Teething-related tenderness should gradually improve as eruption finishes, although chewing may continue as a normal exploratory or learned behavior. Permanent teeth are stronger than baby teeth, but they can still fracture on bones, antlers, hooves, ice cubes, hard nylon products, and other rigid objects. Continue choosing appropriately sized, flexible chew items and supervising their use.
Training progression should be based on the puppy’s maturity, health, focus, previous learning, and the safety of the environment rather than dental development alone. Off-leash work should only occur where it is safe and permitted and after recall has been developed gradually.
Check your puppy’s mouth regularly as permanent teeth erupt. If a permanent tooth begins appearing while its deciduous counterpart remains in place, contact your veterinarian promptly rather than waiting until 7 months. Early treatment may help prevent crowding, abnormal tooth position, traumatic contact, and periodontal problems.
Stage-Specific Management Strategies
Tailoring your management approach to each teething stage can help keep your puppy comfortable while supporting safer chewing and continued learning.
Early-Stage Management (Weeks 3–12)
- Begin gentle handling when developmentally appropriate. Once puppies are actively engaging with people, briefly touch the lips and outer mouth area while pairing the experience with something positive. Avoid pressing on tender gums or forcing the mouth open.
- Introduce appropriately sized, flexible puppy toys. Supervise every chew session and remove toys that begin breaking apart or are small enough to swallow.
- Pause play when biting becomes too hard. Calmly stop interaction for a short period, then redirect the puppy to an appropriate toy. A yelp may excite some puppies and increase biting, so discontinue it if arousal rises.
- Build handling tolerance gradually. Keep interactions short and comfortable to prepare your puppy for future veterinary examinations and dental care.
Peak Teething Phase Protocol (Approximately 3½–6 Months)
- Provide a rotation of appropriately sized, flexible puppy-safe chew toys. Refrigerated or lightly chilled rubber toys may offer comfort, but avoid rock-hard frozen objects, ice cubes, bones, antlers, hooves, and rigid nylon chews that can fracture teeth. Food items such as carrots should only be offered with veterinary approval, in an appropriate size, and under close supervision because pieces may present a choking or digestive risk. No toy or chew is completely risk-free.
- Modify training according to your puppy’s comfort and attention. Use brief, successful sessions, easy behaviors, and rewards your puppy can eat comfortably. Stop if your puppy becomes distressed, repeatedly disengages, or shows pain when taking food.
- Introduce a trade cue. When your puppy picks up something inappropriate, present a suitable alternative without pulling the original item from their mouth. Reward the release and practice with low-value objects before using the exercise in more challenging situations.
- Maintain consistent household expectations. Everyone should use the same calm redirection, management, and reinforcement strategies. Avoid physical punishment or forcibly removing objects because these responses may increase fear, conflict, or guarding.
Teething Stage Comparison
Understanding how management needs shift across stages helps you stay one step ahead of your puppy’s development.
| Phase | Typical Dental Development | Management Focus | Safer Options |
| Birth–3 weeks | No erupted teeth | Warmth, nursing, health monitoring, and brief caregiver handling | No chew toys needed |
| 3–12 weeks | Deciduous teeth erupt and early mouthing develops | Weaning, socialization, gentle handling, and supervised redirection | Appropriately sized, flexible puppy toys |
| Approximately 3½–6 months | Baby teeth shed and permanent teeth erupt | Puppy-proofing, supervised chewing, comfort, and monitoring appetite | Flexible rubber toys and veterinarian-approved chilled options |
| Approximately 6–7 months and beyond | Permanent dentition becomes complete | Check for retained baby teeth, continue safe chewing, and introduce dental home care gradually | Flexible toys and age-appropriate, veterinarian-recommended dental products |
The teething transition usually requires the most active chewing management, but training-program suitability should be based on age, vaccination status, health, behavior, and individual goals rather than dental stage alone. The 10 Day Pawsitive Foundation Puppy Board and Train is currently listed for vaccinated puppies between 12 and 24 weeks, so owners should confirm eligibility before choosing the program.
Common Teething Challenges and Training Solutions
Teething can create practical challenges, but not every change in a puppy’s behavior is caused by dental discomfort. Consider the complete routine, including rest, supervision, exercise, enrichment, health, and training consistency.
Excessive Chewing and Destructive Behavior
Increased chewing is one of the most common concerns during puppy teething. Prevent access to electrical cords, shoes, furniture edges, children’s toys, and other unsafe items while keeping appropriate chew toys available.
When you catch your puppy chewing something off-limits, calmly redirect them to a suitable toy rather than simply removing the item. Choose flexible toys in an appropriate size and supervise their use. Remove any toy that becomes damaged, develops loose pieces, or becomes small enough to swallow.
Avoid bones, antlers, hooves, ice cubes, rigid nylon products, and other objects that do not bend or give under pressure. These materials can fracture deciduous and permanent teeth.
Increased Biting and Mouthiness During Training
Mouthing may increase during teething, excitement, frustration, or active play. Keep hands away from your puppy’s mouth when possible, deliver treats carefully, and provide an appropriate toy before play becomes overly intense.
If biting becomes too hard, pause the interaction briefly and create space. Resume when your puppy is calmer and reinforce gentler play. Avoid physical punishment, intimidating responses, or continuing rough play after the puppy becomes overstimulated.
The goal is not to expect perfect mouth control immediately. Continue teaching gentle interaction so that mouthing does not become a repeated method of gaining attention or continuing play.
Training Regression Due to Discomfort
Some puppies may appear less engaged when their mouths are tender, but training or housetraining regression should not automatically be blamed on teething. Review the puppy’s routine, supervision, reinforcement, rest, and health.
Sudden changes, accidents, appetite changes, or persistent discomfort may require veterinary evaluation. Temporarily reduce task difficulty and reward familiar behaviors without abandoning the routines your puppy already understands.
Loss of Focus During Teething
On days when your puppy appears uncomfortable, use brief sessions, familiar behaviors, and soft rewards that can be eaten without difficulty. Play-based training may also provide an engaging outlet when the activity remains calm, structured, and safe for the puppy’s mouth.
If your puppy refuses food, drops food, chews only on one side, paws at the mouth, or avoids using the mouth, pause training and contact your veterinarian.
When to Consult a Veterinarian
Contact your veterinarian if your puppy has persistent or more than minimal bleeding, marked gum swelling, pus, facial swelling, a broken tooth, strong or persistent bad breath, difficulty eating, decreased appetite, food dropping from the mouth, one-sided chewing, or obvious pain.
Do not wait a full day to seek guidance for a young or small puppy that refuses food. A deciduous tooth still present beside an erupting permanent tooth should also be evaluated promptly rather than waiting until 7 months. Regular mouth checks can help you notice changes early. Cornell University College of Veterinary Medicine provides additional information about signs of dental disease.
Conclusion and Next Steps
Puppy teething follows a general developmental timeline from the eruption of deciduous teeth at approximately 3 to 5 weeks through the completion of permanent dentition at around 7 months. The timing, discomfort, and chewing intensity vary among individual puppies, so use these age ranges as practical guidance rather than rigid deadlines.
The core takeaway is that increased chewing and mouthiness may occur during teething, but not every training or behavioral change is caused by dental discomfort. Provide supervised, flexible chew options, continue calm redirection and age-appropriate training, and contact your veterinarian when symptoms exceed mild, temporary tenderness.
Your immediate next steps:
- Identify your puppy’s current teething stage using the approximate timeline in this guide.
- Assess whether your chew-toy selection and management strategies match your puppy’s size, chewing style, and dental development.
- Introduce dental home care gradually using a soft toothbrush and pet-specific toothpaste. Avoid brushing inflamed or painful gums while deciduous teeth are actively shedding. Once permanent teeth have erupted and the mouth is comfortable, daily brushing is the most effective home method for reducing plaque. Review the AAHA dental-care guidance for additional recommendations.
- Request a free consultation if you need help developing an age-appropriate training and household-management plan for your puppy.
If you’re navigating the teething transition with a puppy who seems determined to chew through your household, remember that active tooth replacement does end. The habits built during this period can help your puppy learn which items are appropriate to chew while supporting safer interactions and future dental care.
Related topics worth exploring include leash training during puppyhood, safe socialization, and building recall gradually as your puppy matures.
Frequently Asked Questions
How many teeth do puppies have?
Most puppies develop 28 deciduous teeth. These baby teeth are eventually replaced by 42 permanent adult teeth, although individual dogs may occasionally have missing or additional teeth.
When do puppies lose their baby teeth?
Puppies commonly begin losing their baby teeth at approximately 3½ to 4 months. Most permanent teeth are present by approximately 6 to 7 months, although timing varies among individual puppies.
What are common signs of teething in puppies?
Common signs may include increased chewing, drooling, mild gum tenderness, irritability, and small spots of blood on a toy. Some puppies may also eat less enthusiastically while their mouths are tender.
How can I help soothe my puppy’s teething pain?
Appropriately sized, flexible rubber toys that have been lightly chilled may provide comfort. Avoid rock-hard frozen toys, ice cubes, bones, antlers, hooves, and rigid chews that could fracture teeth. Supervise every chew session and ask your veterinarian about suitable food-based options for your puppy.
When should I consult a veterinarian about my puppy’s teething?
Contact your veterinarian if your puppy has persistent bleeding, severe pain, marked swelling, pus, facial swelling, difficulty eating, a broken tooth, or strong bad breath. A baby tooth that remains beside an erupting permanent tooth should also be evaluated promptly rather than waiting until teething is complete.
Does teething affect my puppy’s health?
Teething may cause temporary tenderness, mild gum irritation, drooling, and increased chewing. Safe chew management, regular veterinary examinations, prompt attention to retained baby teeth, and gradual dental home care help support healthy permanent dentition. Teething should not cause severe pain, marked swelling, persistent bleeding, or prolonged refusal to eat.
