Cat Jaw and Teeth Anatomy: What Normal Looks Like
By Dr. Zubair Khalid, DVM, MS, PhD ·
A normal cat jaw holds 30 permanent teeth set in a skull built for shearing meat, not grinding plants. The upper jaw carries 16 teeth and the lower jaw carries 14, and the two sides should look mirror-symmetric when you lift the lips. Knowing this normal picture helps you notice a cat mass on the jaw, a swollen cheek, or a broken tooth while it is still small.
This article is educational and is not a substitute for veterinary diagnosis or treatment.
Quick Answer
- Most cats have 26 baby teeth and 30 permanent teeth, with permanent teeth arriving around 4 to 7 months of age [1].
- The tooth line runs incisors in front, then long canine teeth, then premolars, then molars at the back of each jaw [2].
- Cats chew with a guillotine-like up-and-down shearing motion, usually 3 to 7 chews before swallowing [3].
- The left and right sides of the jaw should match in size and shape. Any firm lump, asymmetry, or new swelling needs a vet visit.
- Daily home care plus professional cleanings under anesthesia are the only proven ways to control plaque below the gum line [4].
What Normal Cat Teeth and Jaw Anatomy Looks Like
The four tooth types
A cat's mouth has four kinds of teeth, and each does a specific job [2].
Incisors. These are the tiny front teeth, six in the upper jaw and six in the lower jaw. They sit in a row between the canines and are used for nibbling and grooming.
Canines. The four long fangs, one on each side of the upper and lower jaw. These are single-rooted and are the teeth you see most easily when your cat yawns.
Premolars. These sit behind the canines. In the upper jaw, the first premolar has one root and the second and third premolars have two roots. In the lower jaw, the first premolar has one root and the second through fourth premolars have two roots [2].
Molars. These are the back teeth. The upper first and second molars each have three roots. The lower first and second molars each have two roots [2]. Cats do not have a lower third molar, which is one reason the lower jaw holds fewer teeth than the upper jaw.
Upper jaw versus lower jaw
The upper jaw, called the maxilla, is wider than the lower jaw, called the mandible. This slight overbite is normal in cats. When the mouth is closed, the upper incisors sit just in front of the lower incisors, and the lower canines rest slightly ahead of the upper canines.
The upper jaw also has more teeth than the lower jaw because of the extra molar roots and the fourth upper premolar, which is the largest tooth in the mouth. This tooth, sometimes called the carnassial tooth, does most of the shearing work when your cat eats [2].
What the teeth look like
Healthy cat teeth are off-white to slightly ivory, smooth, and fully covered by enamel above the gum line. The gum line should be a thin, pale pink edge that hugs each tooth tightly. You should not see yellow-brown tartar, red swollen gums, or a receding gum line in a healthy mouth [4].
If you want a closer look at the full mouth, including how veterinarians examine each tooth, see Prevent Dental Problems In Cats.
How to Check Your Cat's Mouth at Home
You do not need to be a veterinarian to do a basic check. A short weekly look can catch problems early.
Step-by-step mouth check
- Pick a calm moment. After a meal or during a relaxed cuddle works best. Do not force it if your cat struggles.
- Lift the upper lip on one side. Look at the canine and the teeth behind it. Compare the gum color to the other side.
- Lift the lower lip on the same side. Check the lower canine and the premolars.
- Repeat on the other side. The two sides should look the same.
- Gently open the mouth if your cat allows. Look at the incisors and the roof of the mouth.
- Run a clean finger along the outside of the cheek and jaw. You are feeling for lumps, bumps, or areas that are warmer than the rest.
- Note any odor. A strong smell is a common early sign of dental disease [4].
What to record
Keep a simple note of the date, what you saw, and which tooth or area looked different. This helps your vet track changes over time. If you notice a firm lump on the jaw, measure it roughly with your fingers and write down the size.
Normal Cat Teeth Jaw Checklist
| Area to check | What normal looks like | What is not normal |
|---|---|---|
| Number of teeth | 30 permanent teeth in adults [1] | Missing teeth, extra teeth, retained baby teeth |
| Gum color | Pale pink, tight against the tooth | Red, swollen, bleeding, receding |
| Tooth color | Off-white to ivory, smooth enamel | Yellow-brown tartar, dark spots, chips |
| Jaw symmetry | Left and right sides match | Swelling, firm lump, one side larger |
| Bite | Slight upper overbite | Crooked bite, jaw that will not close |
| Breath | Mild, not strong | Foul odor |
| Chewing | Normal speed, no dropping food | Dropping food, chewing on one side, crying out |
| Drooling | None or minimal | Sudden drooling, blood in saliva |
Cat Teeth Skull and Jaw: What Changes with Age
Kittens are born without teeth. The baby incisors start coming through at 2 to 4 weeks of age, and the baby premolars at 5 to 6 weeks [1]. By the time a kitten is about 2 months old, all 26 baby teeth are usually in place.
Permanent teeth start replacing the baby teeth around 4 to 7 months of age [1]. By about 7 months, most cats have their full set of 30 adult teeth. If a cat still has baby teeth at 7 or 8 months, or if the adult teeth are slow to appear, your vet may want to check for an underlying problem. Delayed dental eruption has been linked to congenital hypothyroidism in at least one reported case, and treatment with thyroid hormone supplementation restored normal dentition without surgery [5].
As cats age, the skull does not change shape, but the teeth and gums do. Tooth resorption is a common and painful dental disease in cats, and it can affect the roots below the gum line where you cannot see it [6]. This is one reason dental radiographs matter. For a deeper look at how those images are taken and read, see Dental Radiography Positioning and Interpretation in Dogs and Cats.
Signs That Something Is Wrong
Dental signs
- Red, swollen, or bleeding gums [4]
- Yellow-brown tartar along the gum line
- Foul breath
- Dropping food or chewing on one side
- Pawing at the mouth
- Sudden drooling or blood in the saliva
- A tooth that looks broken, loose, or dark
Jaw signs
- A firm lump or mass on the jaw
- Swelling on one side of the face
- Asymmetry when you look at your cat head-on
- Reluctance to open the mouth
- Pain when you touch the jaw
- A jaw that will not close properly
Behavior signs
- Eating less or refusing hard food
- Weight loss
- Grooming less than usual
- Hiding or irritability
- Bad mood or withdrawal
Dental pain can show up as changes in grooming and mood long before you see anything wrong in the mouth. For more on that link, see Why Is My Cat grooming less than normal? Obesity Dental Pain and Depression.
Common Mistakes Owners Make
Mistake 1: Assuming a lump is just a bug bite. A firm, fixed mass on the jaw is not normal. It needs a vet exam, and often a biopsy or imaging.
Mistake 2: Skipping professional cleanings because the teeth look white. Plaque below the gum line is the real problem, and you cannot see it or brush it away [4]. Cleaning without anesthesia may make the tooth look better but does not treat the underlying disease [4].
Mistake 3: Waiting for the cat to stop eating. Cats often keep eating through significant dental pain. Dropping food, chewing on one side, or eating more slowly are earlier signs.
Mistake 4: Using human toothpaste. Human toothpaste is not made for cats and can cause stomach upset. Use only products labeled for cats.
Mistake 5: Ignoring bad breath. Foul breath is a sign of infection, not just "cat breath" [4].
Mistake 6: Relying on dental chews alone. Cats chew with a guillotine-like shearing motion, usually 3 to 7 chews before swallowing [3]. That motion limits how much a chew can clean. Chews can help, but they do not replace brushing or professional care.
Supplies and Setup That Matter
You do not need much to start, but the right tools make a difference.
- Cat toothbrush or finger brush. A soft brush sized for a cat's small mouth.
- Cat toothpaste. Poultry or seafood flavor helps acceptance. Never use human toothpaste.
- Good lighting. A bright lamp or a phone flashlight helps you see the gum line.
- A towel. For wrapping a wiggly cat during a mouth check.
- A notebook or phone note. Track what you see and when.
- Vet records. Keep a list of past cleanings, extractions, and dental radiographs.
If your cat has never had a dental exam, ask your vet to show you how to brush at home. For a full prevention plan, see How To Prevent Dental Problems In Cats.
Limitations and When to Contact a Veterinarian
This article gives you a normal baseline, but it cannot tell you what is happening in your cat's mouth. Individual cases need a veterinarian who can examine, image, and test your cat.
Contact your vet the same day if you see:
- A new firm lump or mass on the jaw
- Swelling on one side of the face
- Bleeding from the mouth that does not stop
- A tooth that is loose or broken with pain
- Sudden drooling or refusal to eat
Go to an emergency clinic now if you see:
- A jaw that is hanging open or will not close
- Heavy bleeding from the mouth
- Difficulty breathing
- A swollen area under the jaw that is growing fast
- Collapse or severe weakness
Book a routine visit if you see:
- Bad breath that has gotten worse
- Yellow-brown tartar along the gum line
- Red or swollen gums
- Chewing on one side or dropping food
- Grooming less than usual
Your vet will decide what tests are needed. Dental radiographs are often part of a complete oral exam because they show roots and bone that you cannot see from the outside [6].
Frequently Asked Questions
How many teeth does a cat have?
Adult cats usually have 30 permanent teeth, and kittens have 26 baby teeth that are replaced starting around 4 to 7 months of age [1]. The upper jaw holds 16 teeth and the lower jaw holds 14.
What do cat molars look like?
Cat molars are the flat-topped teeth at the very back of the mouth. The upper molars have three roots each, and the lower molars have two roots each, which makes them strong anchors for shearing food [2].
Why does my cat chew on one side?
Chewing on one side often means something hurts on the other side. It can be a broken tooth, gum disease, or a problem in the jaw itself. A vet exam is the fastest way to find out.
Can a cat live without teeth?
Yes, many cats do well after full-mouth extractions once the pain is gone. Cats shear food instead of grind it, so many can still eat dry kibble after healing. Your vet will guide the diet transition.
Is a lump on the jaw always cancer?
No, not every lump is cancer. It can be an infection, an abscess, a cyst, or a benign growth. Only a vet can tell the difference, and a firm, fixed mass should always be checked.
How often should my cat have a dental exam?
Most adult cats benefit from a dental exam at least once a year, and some need checks more often. Your vet will set the schedule based on your cat's gum health, tartar level, and history of dental disease [4].
Related Articles
- Dental Radiography Positioning and Interpretation in Dogs and Cats
- Prevent Dental Problems In Cats
- Cat Eyes: Understanding Feline Vision, Common Eye Problems & Care Tips
- How To Prevent Dental Problems In Cats
- Why Is My Cat grooming less than normal? Obesity Dental Pain and Depression
- Cat Dental Cleaning Risks
References
- Dental Development of Cats - Cat Owners. Merck Veterinary Manual.
- Dentition and Dental Nomenclature of Animals - Digestive System. Merck Veterinary Manual.
- Development of dental hygiene gum for cats considering their anatomical features of dentition. Journal of veterinary science, 2019.
- Dental Disorders of Cats - Cat Owners. Merck Veterinary Manual.
- Medical Management of Dental Abnormalities Related to Congenital Hypothyroidism in a Cat. Journal of veterinary dentistry, 2023.
- Association of Skull Type, Diet, and Chronic Gingivostomatitis with Tooth Resorption in Cats Receiving Dental Treatment. Animals : an open access journal from MDPI, 2026.