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My dog has a small red spot, not itchy or painful. What is it?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 3 years and 11 months old | 58 lbs

My dog has a small red round rash. No satellite lesions. Solid red. No hair loss. No apparent pain or itching. Any idea what it could be? I did not see any bugs attached there. He had a tick last week but it was on his flank. This area is on his lower chest, near from left leg. The smaller red area to the left is his nipple.

2 Answers

Most Helpful Answer

Lauren M. Jones, VMD

Answered By Lauren M. Jones, VMD

Veterinarian

Published on July 27th, 2017

Bo's lesion looks most suspicious for a bacterial skin infection, but could also be due to ringworm, mange, or bruising. Since it does not seem to be bothering him, you can monitor the lesion for the time being to see if it changes colors, grows, becomes itchy, or spreads elsewhere. You can also try bathing him with an antimicrobial shampoo (here is one example: http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=27982 ). However, if the lesion worsens or seems to be causing discomfort, it is worth taking a trip to the vet for evaluation. I hope that all goes well!
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Related Answers from Veterinarians

  • Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on July 9th, 2019

    Thanks for using Petco Pet Education Center, formerly Petcoach! This looks like a focal infection. You can try to use chlorhexidine containing pads (such as the Douxo chlorhexidine 3% PS pads) to clean the are twice daily for 7 days. You may find these online or at your local pet store. If there is no improvement or in the meantime this appears to be getting worse, have him evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!


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    1Pet Parents found this answer helpful

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