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Can my dog get Horner's syndrome affecting both sides of its face?

Updated On September 23rd, 2025

Pet's info: Dog | Curly-Coated Retriever | Female | 4 years and 11 months old | 70 lbs

Can a dog get Horner's on both sides of the face?

1 Answer

Most Helpful Answer

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Answered By Vanessa Yeager DVM MPH

Veterinarian

Published on October 22nd, 2017

Hi there and thanks for posting! Yes, Horner's can occur on both sides of the face. Horner's syndrome is idiopathic, meaning it may have multiple causes or a cause may not be identified. Having Regis examined by her veterinarian can help determine a cause. I hope this helps and thanks for using Petco Pet Education Center, formerly Petcoach!

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