What's this red ring on my dog's skin? Is it a bug bite or infection?

Question

Does this look like a typical bug bite? (She is up to date on her flea/tick and heartworm etc meds). Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 1 year and 2 months old | 35 lbs

Jessica Keay, DVM · Accepted Answer

It is possible this is an insect bite. Fly bites in particular can look like a red ring with a central pallor (pale area in the middle). It is tough to tell from the photo what the central area looks like. If it is raised and looks like it is filled with yellow/pus, then this could be a pustule which is a sign of skin infection. If the center is flat with the skin and just pale in color, then a bug bite is more likely.

What's this red ring on my dog's skin? Is it a bug bite or infection?

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