Introduction
Puppy teething is a natural process that unfolds in four stages between birth and 8 months of age. Puppies are born without teeth and start developing baby teeth around 3 weeks. By 8 weeks, they have all 28 baby teeth. Puppies develop 42 adult teeth after losing 28 baby teeth, with the full set typically in place by 6 to 8 months of age.
This guide covers the complete puppy teething timeline, the physical signs at each teething stage, breed-specific differences, and how to adapt training during each phase. It is written for new puppy owners and pet parents in Southwest Florida who want to manage teething behaviors while keeping training on track. Understanding your puppy’s dental development prevents destructive chewing habits from becoming permanent and keeps obedience progress moving forward during a period when puppies are uncomfortable and distracted.
Puppy teething occurs in two main phases: eruption of baby teeth and transition to adult teeth. Teething typically lasts from 3 weeks to 6-8 months of age.
After reading this guide, you will be able to:
- Identify which teething stage your puppy is in based on visible dental changes
- Select appropriate chew toys matched to each stage and your puppy’s breed
- Adjust training sessions around periods of peak discomfort
- Recognize warning signs that require veterinary attention
- Maintain obedience progress even when your puppy is irritable or distracted
Understanding Puppy Teething Development
Puppy teething is the biological process through which a dog develops its first set of teeth, called deciduous teeth (also known as milk teeth), and then replaces them with permanent adult teeth. This process spans roughly the first eight months of life and serves a specific developmental function: deciduous teeth allow puppies to transition from nursing to solid food, while adult teeth provide the jaw strength needed for chewing and play throughout adulthood. Puppy teething is a normal developmental process, but it directly affects behavior. The onset of permanent teeth corresponds with increased oral discomfort, more chewing, reduced focus during training, and sometimes appetite changes.
Baby Teeth vs. Adult Teeth
Puppies have 28 baby teeth, which include 12 incisors, 4 canines, and 12 premolars. No deciduous molars exist. Baby teeth begin to appear at about 3 weeks of age. By 8 weeks, puppies have 28 baby teeth fully erupted. These tiny teeth are sharp, thin, and fragile; they serve as tools for exploring the world and learning bite pressure from littermates.
Adult teeth number 42 in total: 20 in the upper jaw and 22 in the lower jaw. The permanent set includes incisors, canines, premolars, and molars. Adult teeth have longer roots, thicker enamel, and greater bite force than baby teeth. Adult teeth start to emerge around 4 to 6 months, with incisors arriving first, followed by canine teeth, premolars between 4 and 6 months, and molars last between 5 and 8 months.
The training implications are direct. During the baby teeth stage, bite inhibition training involves lighter pressure thresholds. Once permanent adult teeth erupt, puppies can cause real damage with their mouths, making precise bite control and commands like “drop it” essential. Pet parents should also begin dental care habits early; getting your puppy’s teeth brushed with pet safe toothpaste during the deciduous stage builds tolerance for lifelong dental health routines.
Breed Variations in Teething
A 2023 study of 440 puppies across 82 breeds found that breed size and skull type (brachycephalic vs. dolichocephalic) affected the timing of permanent tooth eruption, while sex and jaw side did not. Small and toy breeds, such as Chihuahuas and Yorkies, tend to lag behind larger breeds in both losing baby teeth and completing adult dentition. Their permanent teeth may not fully arrive until 7 to 8 months of age, and retained baby teeth (particularly canines) are more common, sometimes requiring veterinary extraction. Retained baby teeth can cause dental overcrowding and crooked teeth.
Large breeds like German Shepherds and Labrador Retrievers typically follow the standard teething timeline more closely, with adult teeth completing eruption around 6 months. Their stronger jaws mean increased chewing force earlier, which raises the risk of destructive puppy chewing if not managed with durable, puppy safe chew toys.
Brachycephalic breeds (Pugs, Bulldogs, French Bulldogs) face additional challenges. Their compressed skull shape creates crowding in the puppy’s mouth, increasing the risk of malocclusion and missing teeth. These breeds benefit from more frequent veterinary dental monitoring during the teething process.
The Four Critical Teething Stages
Each teething stage presents distinct behavioral patterns and training windows. The stages overlap slightly depending on breed, but the sequence is consistent across all dogs. Recognizing which stage your puppy is in allows you to anticipate changes in chewing behavior, adjust training expectations, and provide the right type of comfort.
Stage 1: Newborn to 3 Weeks (Pre-Teething)
Newborn puppies arrive without teeth. During this neonatal period, eyes open around 10 to 14 days, and coordinated walking begins between days 14 and 21. Puppies rely entirely on nursing, and their jaws and alveolar sockets are still developing beneath the gum line. There are no training considerations at this stage. The focus is on health: adequate warmth, nutrition from the mother, and gentle handling. Breeders who introduce soft touch and mild handling during this window lay groundwork for puppies that tolerate mouth manipulation later.
Stage 2: 3 to 8 Weeks (Baby Teeth Emergence)
Puppies start teething around 3 weeks of age, when the first incisors push through the gums. Canine teeth follow, then premolars. Puppies have 28 baby teeth by 8 weeks old. Like human babies, puppies experience discomfort as these tiny teeth break through, leading to the start of exploratory mouthing behavior.
This stage overlaps with weaning. Between 4 and 6 weeks, soft, moistened food begins replacing mother’s milk. The newly erupted puppy teeth make this transition possible.
Training during this period is light and brief. Sessions should last 5 to 10 minutes at most. Key priorities include:
- Bite inhibition basics: Littermate play teaches puppies pressure limits. When a puppy bites too hard, the bitten puppy yelps and withdraws, teaching the biter to moderate force.
- Mouth handling: Gently touching lips, lifting the lip to inspect the puppy’s gums, and light gum massage. These exercises prepare puppies for future tooth brushing and veterinary dental exams.
- Chew toy introduction: Soft rubber toys and small plush toys provide safe outlets for mouthing. Rotating toys maintains novelty.
Stage 3: 12 to 24 Weeks (Transition Period)
This is the most intense puppy teething phase. Puppies start teething at 12-16 weeks of age as permanent teeth begin replacing deciduous ones. Baby teeth fall out as adult teeth erupt underneath them. Incisors are typically replaced between 12 and 16 weeks, canines around 4 to 5 months, premolars between 4 and 6 months, and the first molars appear between 5 and 7 months.
Puppies lose baby teeth between 3.5 to 5 months. Many pet parents find tiny teeth on the floor or in bedding. It is normal for puppies to lose baby teeth and find them on the floor, though many puppies swallow their shed teeth, so owners may never see them.
Common signs of puppy teething include excessive chewing and swollen gums. Puppies drool more than usual. Increased drooling is a common symptom of teething in puppies. Teething can cause swollen or bleeding gums, though teething can cause minor bleeding from the gums, which is often normal. Teething can lead to bad breath due to gum inflammation. Puppies may show irritability or decreased appetite when teething. Puppies often experience an intense urge to chew during the teething process.
Training during this stage requires patience and structure. Puppies may regress on commands they previously knew. Consistency remains critical; keep sessions short (2 to 5 minutes when the puppy seems uncomfortable) and use positive reinforcement. Commands like “leave it” and “drop it” become essential tools. To help a teething puppy, offer frozen baby carrots or frozen wet washcloths to soothe sore gums and inflamed gums. Avoid hard bones or antlers to prevent tooth damage to developing teeth.
Stage 4: 6 to 8 Months (Adult Teeth Completion)
Most puppies finish teething by about 6 months old, though small breeds may take until 7 or 8 months. Teething typically starts to ease around 6 to 7 months as adult teeth come in. By 8 months of age, all 42 permanent adult teeth should be in place. Puppies stop teething once the full adult set has erupted.
Chewing behavior begins to normalize during this stage, though it does not disappear entirely. Puppies still chew out of boredom, stress, or habit. The difference is that increased chewing driven specifically by puppy teething pain subsides. Bite force is now at adult levels, which means bite inhibition training needs to be more precise.
This is the time to establish a permanent dental care routine: regular brushing with pet safe toothpaste, veterinary dental exams, and appropriate dental chews. Begin brushing consistently if you have not already. Puppies at this stage are also ready for longer training sessions and can begin working toward off-leash reliability with refined control commands.
Professional Training Strategies for Each Stage
Training through teething requires adjusting methods to match what is happening in the puppy’s mouth. A puppy in active discomfort cannot focus the same way a comfortable puppy can. The goal is to maintain forward progress without pushing a puppy past what its current physical state allows.
Early Stage Training (3-12 Weeks)
Bite inhibition at this age follows a straightforward protocol: allow gentle mouthing during play, and when the puppy bites too hard, respond with a sharp “ouch” or yelp and withdraw attention for 10 to 15 seconds. Resume play when the puppy is calm. This mimics the feedback puppies receive from littermates and teaches pressure control. For more on why puppies bite during play and how to manage it, structured guidance helps owners avoid accidentally reinforcing the behavior.
Introduce safe chew toys early. Soft rubber toys are ideal for teething puppies at this stage. Cold items, such as chilled carrots or a damp washcloth placed in the freezer for 20 minutes, soothe sore gums during eruption. Rotate chew toys every few days to maintain interest.
Socialization should begin as soon as senses are functional. Expose puppies to multiple people, surfaces, and sounds. Keep sessions brief and positive. Basic handling exercises (touching paws, ears, and inside the mouth) prepare puppies for grooming, vet visits, and tooth brushing.
Peak Teething Training (12-24 Weeks)
When a teething puppy grabs a shoe or furniture leg, redirect immediately to a permitted item and reward the replacement behavior. Providing appropriate chew toys can help manage teething behavior in puppies. The best teething toys for this period include soft rubber toys, rope toys, and frozen options that soothe the puppy’s gums. Avoid anything hard enough to crack developing teeth.
Obedience training continues through this stage, but sessions need to be shorter and more flexible. A puppy with inflamed gums and developing teeth will have a shorter attention span. Focus on impulse control commands: “sit,” “down,” “leave it,” and “drop it.” Use positive reinforcement exclusively; punishment during periods of physical discomfort increases anxiety and can create lasting behavioral problems.
Monitor the puppy’s mouth during this phase. Consult a vet if your puppy has excessive bleeding or pain. Retained deciduous teeth (visible as a double row, particularly with canines) need veterinary attention because they can cause misalignment and damage to the incoming permanent teeth.
Advanced Stage Preparation (6-8 Months)
Once adult teeth are in place, training expectations shift. Bite inhibition needs to account for the stronger bite force of permanent teeth. Train to exact thresholds; the puppy should be able to take a treat gently from your hand and release objects on command without hesitation.
Transition to durable chew toys sized appropriately for your dog’s breed. Small breeds need toys they cannot swallow; large breeds need toys that withstand stronger jaws. Establish clear boundaries about what is and is not acceptable to chew.
This stage is also the natural point to assess readiness for advanced obedience and off-leash work. Recall, stay, and drop commands should be reliable under distraction before moving to off-leash environments.
Managing Teething-Related Behavior Challenges
Distinguishing between teething-driven behaviors and developing behavioral problems is a practical skill. Teething behaviors are temporary, tied to specific dental development windows, and resolve as adult teeth settle in. Behavioral problems persist beyond teething, escalate over time, or appear unrelated to oral discomfort.
Excessive Chewing and Destruction
Increased chewing is a common sign of teething, peaking between 4 and 6 months when premolars and canines are actively erupting. If chewing persists well beyond 8 months of age without fading, the cause is more likely boredom, anxiety, or insufficient mental stimulation.
Environmental management reduces damage: crate your puppy or limit access to a puppy-proofed room when you cannot supervise. Remove items at ground level that you do not want destroyed. Provide a rotation of appropriate chew toys so the puppy always has a sanctioned outlet. In Southwest Florida’s heat, frozen treats and cold treats like frozen baby carrots can soothe a teething puppy’s gums while doubling as teething remedies.
Signs that warrant professional intervention: persistent destruction of household items after adult teeth have fully arrived, chewing accompanied by signs of anxiety (panting, pacing, whining when alone), or resource guarding of chewed items.
Increased Biting and Mouthing
Puppy biting intensifies during teething because the puppy’s mouth is uncomfortable and mouthing provides relief. This is normal behavior, not aggression. The distinction matters: normal teething mouthing is exploratory and playful, involves loose body language, and responds to redirection. Concerning biting is stiff-bodied, directed at specific targets, or escalates when corrected.
Protect children during peak teething by teaching them to offer teething toys rather than hands and to avoid roughhousing that provokes mouthing. Supervise all interactions between teething puppies and young children.
For breeds with strong jaw development (working breeds, herding breeds), early and consistent bite inhibition training prevents problems that become harder to correct once adult teeth and full bite force arrive. If puppy biting escalates outside of play contexts or seems fear-based, consult a professional trainer.
Training Regression During Teething
Puppies in the 12- to 24-week teething window often appear to forget commands they performed reliably a week earlier. This is not defiance; it is a puppy whose attention is dominated by oral discomfort.
The response is to adjust expectations rather than increase pressure. Retrain previous commands using shorter sessions. A 2- to 3-minute session where the puppy succeeds is more productive than a 15-minute session where the puppy fails repeatedly. Maintain daily training even in abbreviated form; consistency across days matters more than duration of any single session. Once the discomfort period passes, puppies typically recover previously learned behaviors within a few focused sessions.
Sleep and Appetite Disruptions
Puppies may experience loss of appetite while teething. Permanent teeth pushing through make chewing painful; try softening kibble with warm water or switching temporarily to wet food. Frozen baby carrots can soothe a teething puppy’s gums while also providing something easy to consume.
Sleep disturbances occur when sore gums and inflamed tissue keep the puppy restless. Provide a frozen chew toy at bedtime. Align training sessions to times when the puppy is rested and has recently eaten, rather than periods when discomfort is peaking.
Severe discomfort during teething may warrant a veterinarian’s consultation. If appetite drops for more than 24 to 48 hours, the puppy loses weight, or drooling is accompanied by persistent swelling or excessive bleeding, schedule a vet visit. Healthy teeth depend on addressing problems during development rather than after permanent damage occurs.
Conclusion and Next Steps
Puppy teething follows a predictable timeline: no teeth at birth, 28 baby teeth by 8 weeks, a transition period from 12 to 24 weeks as puppies lose baby teeth and adult teeth erupt, and a full set of 42 permanent teeth by 6 to 8 months. Each stage requires specific adjustments to training methods, chew toy selection, and owner expectations.
To put this guide into practice:
- Assess your puppy’s current teething stage by checking which teeth are present in the puppy’s mouth
- Select appropriate chew toys for that stage: soft rubber toys and cold treats for early teething, durable options for adult teeth
- Adjust training session length and intensity to match your puppy’s comfort level
- Begin brushing your puppy’s teeth with pet-safe toothpaste to establish lifelong dental care habits
- Schedule a veterinary dental check if you see retained baby teeth, excessive bleeding, or persistent appetite loss
The habits you build during teething, both yours and your puppy’s, establish the foundation for long-term obedience and off-leash reliability. If your new puppy is struggling with teething-related behaviors or you want to keep training on track during this challenging period, schedule a consultation with Off Leash K9 Training Fort Myers to develop a training plan matched to your puppy’s dental development stage.
Related topics worth exploring: the first things to teach your puppy, socialization strategies during teething, and board-and-train options for puppies who need structured support through the peak teething phase.
