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My puppy has ringworm. When can he be with my other dog again?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | unneutered | 2 months and 13 days old | 1.6 lbs

My puppy has ringworm, he’s already been to the vet and is being treated. His hair has grown back on the majority of his spots, my question is do I still have to continue to isolate him? It’ll be 2 weeks on Friday since his treatment began. We also do have another dog inside the home who does not have ring worm.

1 Answer

Most Helpful Answer

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Answered By David Darvishian

Veterinarian

Published on November 29th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear about Taco. I would highly advise isolation in this case but I will tell you this, even shed hairs are contagious so direct contact is NOT needed to spread ringworm. Ringworm should be treated for at 1-2 months after all lesions are gone. I would retest Taco for ringworm to make sure it is completely cleared before integrating him. Good luck Also, ringworm is a Zoonotic disease meaning humans can catch it from dogs. Small children and the elderly, especially shouldn't have contact with him during the time of treatment.

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