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Why is my chihuahua's eye swollen, won't eat, and lethargic?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua (Smooth Coat) | Female | unspayed | 4.8 lbs

My little chihuahua has a swollen red eye. She won’t eat food or treats and is very lethargic.

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1 Answer

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Answered By Tomasz Wnuk

Veterinarian

Published on July 26th, 2020

Hello and thank you for contacting Petco Pet Education Center, formerly Petcoach. Swelling in this area is often related to tooth root abscess. It may be allergic reaction too, but it would be less likely. Lethargy and lack of appetite could be caused by fever and discomfort from the swelling. Please, take Taco to your nearest open vet for an appointment. Once the diagnosis is confirmed, your vet will recommend treatment, it will likely be a course of antibiotics and pain relief.

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