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My puppy is breathing fast, not eating, and very sick. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | unneutered | 3 months and 8 days old | 5 lbs

My puppy is breathing fast, not acting normal, eating less, not energetic, refusing treats. could eh be injured?

1 Answer

Most Helpful Answer

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Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

Published on January 24th, 2018

It sounds like Cubbie is really sick. Breathing fast can be due to a fever (due to infection), an injury, pain or even a problem in the lungs. Any any of those problems can cause a puppy to not eat well and not feel well. Anytime a small puppy is not eating normally, they need medical attention right away. Small puppies can become very sick very quickly because they cannot regulate their blood sugar or temperature normally. I think Cubbie needs to see a vet right away to figure out what is going on and how to treat it. Good luck! I hope that was helpful and that Cubbie feels better soon. Thanks for using Petco Pet Education Center, formerly Petcoach..

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