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Should I worry about my cat's fast breathing resting or sleeping?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Female | spayed | 1 year and 6 months old | 8.6 lbs

Ever since I adopted my kitten almost a year and a half ago (she'll be 2 in May), I've noticed her fast-breathing at all times, even at rest or sleeping. At her year checkup, I DID ask the vet, but she didn't seem concerned. Am I just looking for trouble? Thanks for considering this... Maida Jones

1 Answer

Most Helpful Answer

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Answered By Maria DVM

Veterinarian

Published on November 26th, 2017

I would make sure she is not purring while she is breathing fast since sometimes purring can make it seem like they are breathing fast when they are in reality not. If you are concerned with how Rosebud is breathing I would start with X-rays to rule out lung disease. If the X-rays are clear and it is not lung related the next step is an ultrasound of her heart. Cats can have heart problems without having a heart murmur. If everything is clear then I wouldn't worry to much but without diagnostics it is hard to say if it is something to be concerned about or not. Thank you for using Petco Pet Education Center, formerly Petcoach.

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