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New guinea pig from pet store losing facial hair. Is it ringworm?

Updated On September 23rd, 2025

Pet's info: Small Animal | Unknown - Small Animal | Male | unneutered | 2 lbs

I got a guinea pig from a pet store yesterday and today his hair is missing from his face? The pet store said it could be ring worm? What is your opinion? I plan to take him to the vet tomorrow.

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1 Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on May 24th, 2018

I would take the guinea pig back to the store as ringworm does not develop within 24 or 48 hours. Ringworm is contagious to people and other animals. Please make sure you wash your hands after handling the guinea pig. I would not get another guinea pig from the same pen as most likely they all are infected.

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