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Why is my puppy lethargic, panting, and not eating? Is he sick?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 3 months and 24 days old | 23 lbs

Almost 4-month old puppy is lethargic and eating slow and breathing fast and panting when it isn't hot

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on April 6th, 2017

These symptoms that you are describing are very concerning to me, and I would have Bowie seen by a vet immediately. He could be in pain or he could have eaten something toxic causing his symptoms. I recommended having him evaluated by a vet now to diagnose what is causing these symptoms so he can be treated. Take him into an ER vet clinic, or if there isn't one in your area, there will be a vet on call for emergencies. The information for reach that vet is found on a clinic's answering machine or website.

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