How to Tell a Dog's Age by Its Teeth

You can estimate your dog's age by looking at its teeth.

If you purchase a puppy from a breeder you will likely know its exact birth date. Adopting a dog with an unknown past from a shelter or rescue is another matter. For years, veterinarians have examined teeth to determine dog age, although aging a dog this way is approximate. With the right knowledge, you can estimate your dog's age at home, or you can ask your veterinarian to help.

Instructions

1. Check the appearance of your dog's teeth. If they are sharp and pointy, they are probably baby teeth, which puts your dog's age at 7 months or younger.

2. Look at the color of your dog's teeth. If they are clean and white, they are probably new permanent teeth, which suggests the dog is between 7 months and 1 year of age.

3. Inspect your dog's teeth for a tartar buildup. Tartar appears as yellowing and usually begins on the back teeth. Dull teeth with slight tartar buildup are common in a dog between 1 and 2 years old. The yellow tartar spreads to the front teeth between the ages of 3 and 5 years.

4. Check your dog's teeth for wear and disease. Between the ages of 5 and 10 years, a dog's teeth show increased wear and pigment is visible on the gums.

5. Check for any missing teeth. A dog might start losing its teeth between the ages of 10 and 15 years. Teeth may appear worn and show a heavy buildup of tartar.

References

• Humane Society Veterinary Medical Association: How to Determine a Cat's or Dog's Age