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Why does my dog have bad breath, a broken tooth, and gum issues?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | neutered | 3 years and 1 month old | 12 lbs

My dog has horrible breath and we noticed his teeth broke halfway on one side. His gums are pink and black. He is only 3 years old and is a chihuahua mix.

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on December 8th, 2017

Small breeds are especially prone to developing periodontal disease. The smell may be due to infection in the mouth and under the gumline. A broken tooth, if the root is exposed, is open to infection and abscess within the tooth. Have Alvin examined by your veterinarian. A complete oral exam can confirm the diagnosis. Afterwards, a complete dental cleaning and dental xrays while under anesthesia may be done. The fractured tooth can be extracted or you can have a root canal performed. Once this is done, you may notice a positive change in Alvin's behavior and appetite. Daily brushing with a pet approved toothpaste and toothbrush will extend the amount of time between dental cleanings.

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