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Why is my dog breathing fast, stomach hard, not eating, and shaking?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | unspayed | 10 lbs

Our 5 yr old chihuahua Pekingese dog has rapid breathing and a hard stomach. She does not was to eat. She was also shaking or trembling like she was cold. It has only been one day but I’m worried

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1 Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on April 24th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! Rapid breathing can be a sign of many conditions such as pneumonia, bronchitis, heart disease, among many other possibilities. I recommend that you have Peaches evaluated by your veterinarian for further assessment and treatment. Likely diagnostics to be performed include thoracic radiographs and bloodwork. Inappetence could be due to this or in reality it could be that she has another condition also causing her not to eat such as pancreatitis for example. Treatment would be dependent on findings. Good luck and have a good day!

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