Most puppies have 28 baby teeth. A typical adult dog has 42 permanent teeth: 20 in the upper jaw and 22 in the lower jaw. The count is a useful map of the mouth, but it does not tell you by itself whether the teeth and gums are healthy.
The adult dog's 42 teeth, by type
Veterinary dental anatomy divides the permanent teeth into four groups:
- 12 incisors: the small front teeth used to pick up and nibble objects.
- 4 canines: the long, pointed teeth beside the incisors that help grip.
- 16 premolars: teeth behind the canines that help cut and hold food.
- 10 molars: the rear teeth used in crushing and chewing.
That adds up to 42, according to the Merck Veterinary Manual's dental anatomy reference. The upper jaw normally holds 20 teeth and the lower jaw 22. You do not need to identify every tooth to care for your dog, but knowing the groups makes it easier to describe a broken tooth or a change you notice.
How many teeth does a puppy have?
The usual puppy set has 28 deciduous, or “baby,” teeth: 12 incisors, 4 canines and 12 premolars. Puppies do not have baby molars. Baby teeth begin to appear in the first weeks of life. Replacement usually starts around three to four months, and most permanent teeth are present by about seven months. These are typical ranges, not a timetable that diagnoses an individual puppy.
You may find a tiny tooth on the floor, or never see one fall out. Watch the mouth instead of trying to count every lost tooth. A permanent tooth growing beside a baby canine can create a “double fang” appearance. A retained baby tooth can trap debris and alter the space available to the adult tooth; have a vet examine it rather than trying to pull it at home.
Why can an adult dog have fewer or more than 42?
Some dogs have a tooth that never developed, one that has not erupted, or a tooth removed because of injury or disease. Less often, an extra tooth develops. Crowding can also make a tooth hard to see, particularly in a small mouth. An apparently missing tooth should not be dismissed automatically: a vet can decide whether an oral examination or dental imaging is appropriate. A tooth count alone cannot distinguish a harmless variation from a hidden problem.
What the count means for daily dental care
Focus on comfort and clean tooth surfaces rather than a perfect number. Get your dog used to a gentle look at the lips and outer teeth, then build a brushing routine with dog-safe supplies. The World Small Animal Veterinary Association provides guidance for introducing toothbrushing. A home-care extra such as Pure Majesty Pets dental powder may fit a routine when used as labeled, but a powder does not replace brushing, an oral examination by a vet or treatment of a painful tooth.
Avoid very hard objects that could fracture teeth. Do not force the mouth open if your dog resists or seems sore. A vet can assess areas you cannot see, including below the gumline when needed.
When should a tooth prompt a veterinary check?
Arrange a check if you see a broken or discoloured tooth, swelling, bleeding gums, persistent bad breath, difficulty chewing, food dropping from the mouth, or a puppy tooth still next to an emerging adult tooth. Seek prompt advice if your dog has facial swelling, obvious pain or stops eating. Teeth can look normal above the gumline while trouble lies deeper; a visual count is not a substitute for an oral assessment.
Frequently asked questions
Do all dog breeds have 42 adult teeth?
Forty-two is the normal complete adult set regardless of breed. Individual dogs may have missing, unerupted, removed or extra teeth. Small jaws can make crowding more noticeable, but breed alone does not change the standard dental formula.
Are dogs born with teeth?
No visible teeth are usually present at birth. The baby teeth erupt during the first weeks of life, then make way for permanent teeth over the following months.
Is it normal for a puppy to have two canine teeth side by side?
It can mean a baby canine remains while the adult canine erupts. Arrange an examination, especially if both teeth remain or the bite looks crowded. Do not try to remove the baby tooth yourself.