My dog has a pink ring on her armpit. What could it be? Is it serious?

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I noticed my dog has a pink ring on her armpit. I’m not sure what it is. Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 1 year and 4 months old | 11 lbs

Jessica Keay, DVM · Accepted Answer

Thank you for your question about Mia! In most cases these lesions are actually due to fly bites, often from the black fly. Most of these do resolve within a few days and don't bother the dog much but if she is itching at it, cool compresses or topical benadryl cream can help.

My dog has a pink ring on her armpit. What could it be? Is it serious?

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