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Why is my cat breathing heavily, sluggish, and sleeping a lot?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered

My cat last night had a very weird moment were he was breathing heavily and seems like he couldnt get air he's been very sluggish and sleeping alot.

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on February 14th, 2017

Poor Salem! It does sound like he is sick, and his symptoms could be caused by a respiratory illness, heart disease, heartworms, or cancer among other causes. It's quite serious when a cat is struggling to breathe, and should that happen again tonight, I would have him seen by a vet immediately. Otherwise, monitor him tonight, and take him into the vet first thing in the morning. The vet can diagnose what is causing his symptoms, and can treat him for them.

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