What Age Do Puppies Lose Baby Teeth? | A Complete Timeline

A tiny tooth on the floor or a sudden increase in chewing often signals a major puppy milestone. It’s natural to wonder exactly when this process begins and how long it lasts before you get a moment of peace.

Puppies go through a predictable teething timeline, from their first baby teeth erupting at just a few weeks old to the arrival of all 42 adult teeth. Understanding what age puppies lose baby teeth helps you prepare for the chewing phase and spot potential problems early.

The Typical Timeline for Puppy Teething

A puppy’s mouth changes quickly. They are born completely toothless, but those first 28 baby teeth (called deciduous or milk teeth) usually break through the gums by the time they are about 3 to 4 weeks old.

By 6 to 8 weeks, the full set of sharp little puppy teeth is typically in place. Then, around 12 to 16 weeks of age, the roots of the permanent adult teeth begin to develop. This pushes against the baby teeth, causing them to loosen and fall out naturally.

The process continues steadily, and most puppies have their full set of 42 adult teeth by the time they are about 6 months old. While every puppy develops at a slightly different pace, this timeline is well established across veterinary sources.

Why Understanding the Teething Age Matters

Knowing the standard timeline helps you distinguish normal behavior from something that needs a vet’s attention. It also shapes how you manage the inevitable chewing and nipping without frustration.

• Tracks developmental progress: Matching your puppy’s age to their dental stage can reassure you they are developing normally for their breed and size.
• Explains behavioral changes: Increased chewing, drooling, and nipping aren’t signs of a “bad” puppy — they are typical teething symptoms tied to sore gums.
• Identifies potential problems: If a baby tooth doesn’t fall out and an adult tooth grows in behind it (a retained deciduous tooth), it needs veterinary attention to avoid misalignment.
• Guides teething relief: Knowing they are teething prompts you to provide safe outlets, like frozen washcloths or appropriate puppy chew toys, to soothe their gums.
• Signals when to switch care: Once adult teeth arrive around 6 months, the most intense chewing phase usually subsides, and you can transition to adult dental care routines.

Having a clear picture of the teething timeline helps you respond with patience and the right tools, rather than frustration or confusion.

Order of Tooth Loss — Which Teeth Fall Out When

The process follows a fairly predictable sequence. The incisors, or the small front teeth, are typically the first to go. You might start finding these tiny teeth around the house when your puppy is about 3 to 4 months old.

The premolars come next, followed by the canine teeth — the long, pointed fangs. The canines are usually the last baby teeth to be replaced, often holding on until the puppy is around 5 or 6 months old. Veterinary and USDA resources confirm this sequence; the official aging puppies by teeth guide uses the presence of specific teeth to estimate a puppy’s age accurately.

If you notice an adult tooth coming in behind a baby tooth that hasn’t fallen out, this is a retained deciduous tooth. It’s a relatively common issue, especially in small breeds, and usually requires a veterinarian to extract the baby tooth to make room for the permanent one.

How to Help a Teething Puppy

Teething is uncomfortable. A puppy’s natural response is to chew, which helps loosen teeth and soothe sore gums. You can channel this urge in positive ways to protect your fingers and furniture.

1. Provide suitable chew toys: Offer a variety of textures — rubber, nylon, or rope toys. Rotating them keeps your puppy interested and helps satisfy their natural urge to chew.
2. Offer cold relief: A frozen, wet washcloth is a simple and effective tool. The cold numbs the gums, and the texture feels good to chew on.
3. Redirect inappropriate chewing: If your puppy nips at your hands or chews furniture, calmly offer a toy instead. If they persist, a brief time-out can stop the behavior from being rewarding.
4. Be patient with nipping: Nipping at fingers and toes is very normal during teething. Consistent, gentle training helps them learn bite inhibition over time.

Avoid giving ice cubes, as they can be hard enough to crack a puppy’s teeth. Stick to vet-approved teething toys and cold washcloths for safe, effective relief.

When to Call the Veterinarian

While teething is a natural process, some situations warrant a vet visit. The most common is a retained baby tooth. If you see two teeth — one baby, one adult — in the same spot, it’s time to book an appointment.

A veterinarian can easily extract the baby tooth, preventing crowding or misalignment of the adult teeth. As veterinary clinics like MVA Vets explain, incisors fall out first in the standard timeline, so if an adult incisor appears before the baby one is gone, it’s easier to catch early.

Additionally, consult your vet if your puppy seems to be in significant pain (whining constantly, refusing to eat), has excessive bleeding from the mouth, or if their adult teeth seem delayed beyond the 6-month mark. Your vet can check for underlying issues and provide guidance tailored to your puppy’s breed and size.

The Bottom Line

Puppies typically lose their baby teeth between 3 and 6 months of age. The process starts with the incisors and ends with the canines, wrapping up with a full set of 42 adult teeth. Understanding the standard timeline helps you provide the right care and know when to seek help.

Every puppy develops at their own pace, but if your puppy hasn’t lost any baby teeth by 6 months or you notice a retained baby tooth, your veterinarian is the best person to assess their mouth and recommend the next steps for their lifelong dental health.