Kitten Teething: Timeline, Biting, and What to Expect
By Dr. Zubair Khalid, DVM, MS, PhD ·
Kittens teeth for about 4 to 7 months, starting with baby teeth that erupt between 2 and 6 weeks of age and ending when the permanent teeth finish coming in. Most of the biting and chewing chaos happens between 3 and 6 months, when the baby teeth loosen and adult teeth push through. This article is educational and is not a substitute for veterinary diagnosis or treatment.
Quick Answer
- Baby teeth start erupting at 2 to 4 weeks for the incisors and 5 to 6 weeks for the premolars [1].
- Permanent teeth usually begin to appear at around 4 to 7 months of age [1].
- Most cats end up with 26 baby teeth and 30 adult teeth [1].
- Biting peaks during the transition from baby to adult teeth, so offer safe chew toys and redirect mouthy behavior instead of punishing it.
- Loose teeth, a little drooling, and mild gum redness are normal. Bleeding, swelling, or a kitten who stops eating are not.
How Long Do Kittens Teeth For? The Full Timeline
Teething in cats happens in two waves. The first wave is the baby teeth coming in. The second wave is those baby teeth falling out while the adult teeth arrive. The whole process is usually finished by about 7 months of age [1].
The Baby Teeth Stage (2 to 6 Weeks)
Kitten teeth start early. The deciduous incisors, the tiny front teeth, begin to erupt at 2 to 4 weeks of age [1]. The deciduous premolars follow at 5 to 6 weeks of age [1]. By the time your kitten is weaned and eating solid food, most of the baby teeth are already in place.
This stage is short and usually quiet. You may notice your kitten mouthing at everything, including your fingers, because new teeth feel strange in a small mouth.
The Adult Teeth Stage (4 to 7 Months)
Permanent teeth usually begin to appear at around 4 to 7 months [1]. This is the long, messy part of kitten teething. The adult incisors, canines, premolars, and molars come in over several weeks, and the baby teeth loosen and drop out along the way.
Most cats have 26 deciduous teeth and 30 permanent teeth [1]. That means your kitten gains four extra teeth during the switch, which is one reason the mouth can look crowded and sore for a while.
How Long Do Kittens Lose Teeth?
Kittens lose baby teeth over roughly the same window that adult teeth come in, so about 4 to 7 months [1]. You may find a tiny tooth on the floor or in a toy. You may also find nothing at all, because many kittens swallow their baby teeth while eating. That is normal and not a reason to worry.
Kitten Teething Age: How to Estimate Age by Teeth
If you adopted a kitten with an unknown birthday, the teeth can give you a rough age estimate. This is one of the most useful tools shelters and veterinarians use.
| Age | What You Will Likely See |
|---|---|
| 2 to 4 weeks | Deciduous incisors erupting [1] |
| 5 to 6 weeks | Deciduous premolars erupting [1] |
| 6 to 7 weeks | Usually weaned and able to leave the mother [2] |
| 4 to 7 months | Permanent teeth appearing [1] |
| About 7 months | Adult dentition mostly complete [1] |
Teeth give an estimate, not a birth certificate. Nutrition, illness, and genetics can shift the timing a little. A veterinarian can refine the estimate during a wellness visit.
Kitten visits are also how you stay ahead of vaccine timing. Kittens need to visit the vet every 3 to 4 weeks until they are about 6 months old for shots and parasite treatment [2]. Vaccines usually begin at 2 to 3 months old, once maternal immunity has faded enough for the vaccine to work [2]. If your kitten is also nearing the age for spaying, our kitten spay timeline walks through what to expect.
How to Manage Kitten Biting and Chewing
Step 1: Expect the Peak
Biting is worst when the baby teeth loosen and the adult teeth erupt. Your kitten is not being mean. The gums are sore, and chewing applies pressure that feels good.
Step 2: Redirect Every Time
When teeth touch skin, stop the interaction and offer a toy instead. Do this every single time, with everyone in the household using the same response. Consistency is what teaches the kitten that hands are not toys.
Step 3: Choose the Right Chew Toys
Soft rubber toys, small plush toys, and kitten-safe dental chews work well. Avoid hard plastic, antlers, hooves, and anything harder than your fingernail. A kitten can fracture a baby tooth on a hard object, and fractured teeth that expose the pulp are a real reason teeth get extracted in dogs and cats [3].
Step 4: Cool the Gums
A clean, damp washcloth that has been chilled in the refrigerator can be soothing. Do not freeze it solid. Cold, not rock hard, is the goal.
Step 5: Protect Hands and Feet
Wear long sleeves if your kitten is in a nippy phase. Keep toes covered. Play with wand toys so your hands stay out of the strike zone.
Step 6: Do Not Punish
Yelling, tapping the nose, or scruffing can make biting worse by raising arousal. End the game and walk away for a minute. That is the whole correction.
Step 7: Add a Second Kitten If You Can
Kittens learn bite inhibition from littermates. If you have the space and budget, a second kitten of similar age often reduces human-directed biting. If you already added a kitten and the resident cat is unhappy, see our guide to a cat hissing at a new kitten.
Signs Something Is Wrong During Teething
Normal teething is mild. Watch for these problems instead.
- Persistent baby teeth. If a baby tooth is still in place when the adult tooth comes in beside it, the adult tooth can be pushed out of position. Persistent deciduous teeth were the most common reason for deciduous canine extraction in one multi-practice review, accounting for 178 of 305 extractions [3]. Your veterinarian will check for this at the 4 to 7 month visits.
- A retained tooth root. Sometimes the crown breaks off and the root stays behind, which was another reason for extraction in that same review [3].
- Mouth pain that changes eating. A kitten who drops food, chews on one side, or refuses to eat needs a veterinary exam. If your cat stops eating, our article on a cat not eating but acting normal explains how long you can safely wait.
- Swelling around the jaw. Jaw swelling from bone infection is a known reason cats with certain dental and skeletal syndromes are brought in for dental care [4]. Any facial swelling in a kitten is a same-day call.
- Bleeding gums or a bad smell. Mild gum redness can happen, but bleeding and odor point to inflammation or infection that needs treatment.
Dental disease is not only an adult problem. In a large study of cats who needed extractions, periodontitis, chronic gingivostomatitis, and tooth resorption were the three most common reasons, and periodontitis and tooth resorption became more common with age [5]. Good habits started in kittenhood pay off for years.
Common Mistakes Owners Make
Mistake 1: Assuming biting is aggression. Most kitten biting is play and teething behavior. Treat it as a training issue first.
Mistake 2: Using hands as toys. Once your hand becomes a toy, it stays a toy. Use wand toys and balls instead.
Mistake 3: Skipping the 4 to 7 month dental check. This is exactly when persistent baby teeth and misaligned adult teeth show up. Persistent deciduous teeth and interceptive orthodontics together accounted for most of the extractions in one review of 305 deciduous canine teeth [3].
Mistake 4: Pulling a loose baby tooth. Never pull a tooth yourself. If it is ready, it will come out on its own or your veterinarian will remove it safely.
Mistake 5: Ignoring the vaccine schedule because the kitten seems fine. Kittens need visits every 3 to 4 weeks until about 6 months old [2]. Teething is a good reminder that the mouth and the rest of the body are checked at the same appointment.
Mistake 6: Waiting too long when a kitten stops eating or drinking. Kittens dehydrate fast. If your kitten is not peeing or pooping normally, our guide on how long a cat can go without peeing or pooping covers the warning signs.
Supplies and Setup That Actually Help
You do not need much, but the right items make teething easier.
- Kitten-safe chew toys in a few textures. Rotate them so they stay interesting.
- A soft kitten toothbrush and cat-safe toothpaste. Start touching the mouth now so future brushing is easier.
- Chilled washcloths. Keep two in the fridge and swap them out.
- Wand toys and puzzle feeders. These burn energy and reduce mouthy play.
- A kitchen scale or baby scale. Weekly weights catch appetite problems early during teething.
- A quiet feeding spot. Sore gums make some kittens prefer soft food for a few days. Wet kitten food is fine during this window.
- A calendar for vet visits. Every 3 to 4 weeks until about 6 months old [2].
Limitations and When to Contact a Veterinarian
This article covers typical kitten teething. Individual cases need a veterinarian who can examine your kitten's mouth, check the bite, and look for persistent teeth or infection.
Contact your veterinarian the same day if you see:
- Facial or jaw swelling
- Bleeding from the mouth that does not stop
- A kitten who refuses to eat for more than 12 to 24 hours
- Drooling that is new, heavy, or paired with pawing at the mouth
- A broken tooth with a pink or red center, which means the pulp is exposed [3]
- A baby tooth still present after the adult tooth has come in
Go to an emergency clinic now if you see:
- Trouble breathing
- Collapse or extreme weakness
- A swollen face with difficulty swallowing
- A kitten who cannot hold their head up or seems disoriented
Schedule a routine visit if you see:
- Mild gum redness that lasts more than a few days
- Bad breath that does not improve
- A kitten who is eating less but still active
- Any question about your kitten's age based on their teeth
Frequently Asked Questions
How long do kittens go through teething?
Teething runs from about 2 weeks of age, when the first baby teeth appear, until roughly 7 months, when the adult teeth are in place. The most active and uncomfortable stretch is usually the 4 to 7 month window. After that, the mouth settles down and biting usually fades with it.
Is it normal for my kitten to bite me constantly?
Yes, during teething it is common. Biting peaks when the baby teeth loosen and the adult teeth erupt, and kittens also bite to explore and play. Redirect to a toy every time teeth touch skin, and the behavior usually improves within a few weeks.
Can I tell my kitten's age by their teeth?
You can get a reasonable estimate. Baby incisors show up around 2 to 4 weeks, baby premolars around 5 to 6 weeks, and adult teeth start arriving around 4 to 7 months. A veterinarian can give you a better estimate during an exam.
What if a baby tooth will not fall out?
This is called a persistent deciduous tooth, and it needs a veterinary exam. If the baby tooth stays while the adult tooth comes in, the adult tooth can be pushed out of alignment. Your veterinarian may recommend removing the baby tooth.
Should I brush my kitten's teeth during teething?
Yes, if your kitten tolerates it. Start slowly with a soft brush and cat-safe toothpaste, and keep sessions short. If the gums seem sore, pause for a few days and try again. Brushing early makes adult dental care much easier.
Related Articles
- Cat Hissing at New Kitten: How Long Will It Last?
- Kitten Spay Timeline
- Cat Not Eating But Acting Normal: How Long Can You Wait?
- Cat Not Eating: How Long Is Too Long?
- How Long Can A Cat Go Without Peeing Or Pooping
- Cat Not Pooping: How Long Is Too Long?
References
- Dental Development of Cats - Cat Owners. Merck Veterinary Manual.
- Kitten Care - Cat Owners. Merck Veterinary Manual.
- Closed Extraction of Deciduous Canine Teeth Required Less Surgical Time Without Increased Complication Rate Compared to an Open Technique in Dogs and Cats. Journal of veterinary dentistry, 2026.
- Characterization of Oral Pathology in Cats Affected by Patellar Fracture and Dental Anomaly Syndrome (PADS). Journal of veterinary dentistry, 2023.
- The prevalence of reasons for tooth extraction in cats. Frontiers in veterinary science, 2025.