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My dog has fever, red gums, lost appetite, and gained weight. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | spayed | 8 years and 2 months old | 85 lbs

My dog has red swolen gums. She has a fever. She isnt eating and normally has a great appitite. In about 2 months she has put on a lot of weight. She isnt drinking much. She is bivering and panting like crazy. What could be doing this

2 Answers

Most Helpful Answer

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Answered By Oneal Bogan, DVM

Veterinarian

Published on November 2nd, 2017

Hi there, It sounds like your dog may have an infection based on the fever and red gums. The weight gain could be due to thyroid disease, or something affecting her endocrine system. I would recommend an exam and blood work as suggested already and possibly an X-ray if she’s gained the weight rapidly. Best to you and your dog.

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1Pet Parents found this answer helpful

Other Answers

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    Answered By Daniel Fonza, DVM

    Veterinarian

    Published on

    Hi there and thank you for using pet coach to address your concern. From your description of what is going on, I would recommend having her examined by a veterinarian so that the most appropriate diagnostic testing and treatment can be performed. I would suggest having her blood tested to see if there is any evidence of systemic infection or disease. Based on the test results your vet can then make the most appropriate decisions for treatment. I hope this helps guide you in the right direction. Please feel free to contact me with any further questions or concerns that you may have.

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