Why Does My Dog Have So Many (or So Few) Teeth?
A common question among dog owners is: how many teeth do dogs have? Whether you’re observing a playful pup or a distinguished senior canine, understanding their dental makeup is fundamental to their overall health. Puppies don’t start with the same set as adult dogs, and the transition is a significant developmental milestone. As of May 2026, veterinary sources confirm a clear distinction between puppy and adult dentition, with specific numbers that are crucial for owners to know.
Last updated: May 9, 2026
How Many Teeth Do Puppies Have?
Puppies are born without any teeth, but they quickly develop a set of deciduous, or milk, teeth. This initial set is smaller and sharper than adult teeth, designed for nursing and exploring their world, and by the time a puppy is about 3 weeks old, their first teeth begin to emerge.
A complete set of puppy teeth consists of 28 individual teeth. These are divided into incisors, canines, and premolars. You won’t find molars in a puppy’s mouth; they are part of the permanent set that replaces certain premolars later on.
How Many Teeth Do Adult Dogs Have?
As dogs mature, their deciduous teeth are gradually replaced. A larger, stronger set of permanent teeth emerges. This process is vital for their ability to chew, tear, and process food effectively throughout their adult lives.
An adult dog typically has 42 permanent teeth. This count includes incisors, canines, premolars, and molars. The additional teeth compared to a puppy’s set are primarily the molars, which are essential for grinding food.
The Dog Dental Timeline: From Baby to Adult Teeth
The transition from puppy teeth to adult teeth is a predictable yet sometimes concerning period for owners, and understanding this timeline can help you anticipate changes and address potential problems proactively. This process usually begins around 3 to 4 months of age and is typically completed by 6 to 7 months.
The shedding of puppy teeth often goes unnoticed. The permanent teeth growing resorbs the roots of the baby teeth underneath, causing them to loosen and fall out. Sometimes, a puppy might swallow a small tooth without you ever realising it.
Puppy Teeth Eruption:
- Incisors: Erupt between 3–5 weeks.
- Canines: Erupt between 3–5 weeks.
- Premolars: Erupt between 5–7 weeks.
Puppy Teeth Loss & Adult Teeth Eruption:
- Incisors: Lost between 3–4 months.
- Premolars: Lost between 4–6 months.
- Canines & Molars: Erupt between 4–7 months. (Molars replace some premolars, and new molars appear behind the premolars).
The final permanent teeth to emerge are usually the molars, typically by 7 months of age. By this time, your dog should have their full set of 42 adult teeth.
Anatomy of a Dog’s Smile: Types of Teeth and Their Jobs
Dogs have four main types of teeth, each specialised for a specific function in their diet and behaviour. Analysing the canine dental formula helps us understand their predatory and omnivorous adaptations.
Incisors: These are the small teeth at the very front of the mouth, on both the top and bottom jaws. Dogs have six incisors in the upper jaw and six in the lower jaw, totalling 12. They are used for nipping, grasping food, and grooming.
Canines: Also known as fangs, these are the long, pointed teeth located behind the incisors. Dogs have four canines: two in the upper jaw and two in the lower jaw. They are crucial for tearing meat, holding prey, and defense.
Premolars: Situated behind the canines, these teeth have a flatter surface with cusps. Adult dogs have eight premolars in the upper jaw and eight in the lower jaw, totalling 16. They are used for shearing and crushing food.
Molars: These are the largest teeth, located at the very back of the mouth. Adult dogs have four molars in the upper jaw and six in the lower jaw, totalling 10. Their broad, flat surfaces are designed for grinding and crushing tougher food items.
The canine dental formula for an adult dog is typically I 3/3, C 1/1, P 4/4, M 2/3. This means per quadrant (upper right, upper left, lower right, lower left), dogs have 3 incisors, 1 canine, 4 premolars, and 2 molars on the top jaw, and 3 incisors, 1 canine, 4 premolars, and 3 molars on the bottom jaw. Summing these up correctly per quadrant and multiplying by four gives us the total of 42.
Why Does the Number of Teeth Matter?
Maintaining the correct number of teeth is vital for a dog’s health and quality of life. Deviations from the standard count can signal underlying health concerns or indicate potential problems.
A missing permanent tooth, beyond the natural shedding of puppy teeth, might indicate trauma, disease, or a genetic anomaly. Conversely, having extra teeth (supernumerary teeth) can lead to overcrowding, misaligned bites, and increased risk of plaque and tartar buildup, potentially causing periodontal disease.
Experience Insight: In my years working with rescue organisations, I’ve seen cases where retained puppy teeth caused significant issues, leading to jaw pain and infection. Prompt veterinary intervention is always best when you notice anything unusual with your dog’s dental development.
Common Dental Issues Related to Tooth Count
Beyond simply having the wrong number of teeth, several common dental issues can arise, impacting your dog’s oral health. These range from problems during the teething phase to chronic conditions in adulthood.
Retained Deciduous Teeth: This occurs when puppy teeth don’t fall out and remain alongside the adult teeth. Most commonly seen with canines and premolars, retained teeth can cause misalignment, food trapping, and increased risk of gum disease. According to the American Veterinary Dental College, prompt extraction is recommended to prevent further complications.
Supernumerary Teeth: These are extra teeth that develop beyond the normal set. They can cause significant crowding, leading to abnormal wear on adjacent teeth and making effective cleaning difficult. Veterinary consultation is advised to determine if extraction is necessary.
Congenital Defects: Some dogs may be born with fewer teeth than normal (orthodontia) or malformed teeth due to genetic factors. This can affect their ability to eat and may require specific dietary adjustments or veterinary care.
Malocclusion: This refers to an improper bite where the teeth don’t align correctly. It can be caused by genetics, retained puppy teeth, or trauma, and can lead to painful wear, injury to gums, and difficulty eating.
Essential Dental Care for All Stages
Regardless of how many teeth your dog has, consistent dental care is paramount. Establishing a routine early on can prevent many common problems and ensure your dog enjoys a healthy mouth for years to come.
For Puppies: Introduce a toothbrush and dog-specific toothpaste gradually. Gentle gum massage and allowing safe chew toys can help ease teething discomfort. Focus on positive reinforcement to make dental care a pleasant experience.
For Adults: Aim for daily brushing using a soft-bristled toothbrush and enzymatic toothpaste formulated for dogs. Dental chews, water additives, and specific dental diets can also contribute to good oral hygiene. Regular veterinary check-ups, including professional dental cleanings as recommended by your vet (typically annually), are essential for detecting and treating issues early.
Practical Tip: Look for dental chews that carry the Veterinary Oral Health Council (VOHC) Seal of Acceptance. These products have been proven to help reduce plaque and tartar accumulation.
Frequently Asked Questions About Dog Teeth
How many teeth does a puppy have?
Puppies have a total of 28 deciduous (puppy) teeth. These are smaller and sharper than adult teeth and begin to emerge around 3 weeks of age, with full eruption by about 7 weeks.
When do puppies lose their baby teeth?
Puppies typically start losing their baby teeth around 3 to 4 months of age. The incisors are usually the first to fall out, followed by the canines and premolars, replaced by adult teeth.
How many teeth does a full-grown dog have?
A full-grown, adult dog has 42 permanent teeth. This set includes incisors, canines, premolars, and molars, designed for chewing, tearing, and grinding food.
Can a dog have more than 42 teeth?
Yes, some dogs can have more than 42 teeth due to a condition called supernumerary teeth. This can lead to overcrowding and dental health issues, often requiring veterinary attention.
Can a dog have fewer than 42 teeth?
It’s possible for dogs to have fewer than 42 teeth due to congenital defects (born without them), trauma, or necessary extractions due to disease or injury. Regular vet check-ups can identify any discrepancies.
What are the signs of teething in puppies?
Signs include increased chewing on objects, drooling, sore or bleeding gums, and sometimes a reluctance to eat or play. Providing appropriate chew toys can help ease their discomfort.
Do dogs need professional dental cleanings?
Yes, most veterinarians recommend professional dental cleanings for dogs, typically annually, to remove plaque and tartar buildup below the gum line, assess overall oral health, and prevent serious dental diseases.
Last reviewed: May 2026. Information current as of publication; pricing and product details may change.
Editorial Note: This article was researched and written by the Pet Magazine editorial team. We fact-check our content and update it regularly. For questions or corrections, contact us. For readers asking “How many teeth do dogs have”, the answer comes down to the specific factors covered above.
