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Why does my dog get dark, round sores on his belly in summer?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 6 years and 4 months old | 60 lbs

My dog is six years old. I'm re summer he gets these, round/oval sores on his belly that are dark in color. Sometimes it looks like they scan over? Is this from him running through brush? Could it be hear rash/sores?

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1 Answer

Most Helpful Answer

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Answered By Dr Stafford, BVetMed, MRCVS

Veterinarian

Published on September 12th, 2017

Looking at the lesions and considering the history of this occuring in Summer, I suspect that this is a rash developing in response to allergic reaction to pollen in the grass during the summer months. Any lesion weakens the skin barrier and can lead to infection so sometimes they will get infected and scan over. Giving antihistamines can help some dogs, but rinsing him off after a walk will also help to reduce the pollen stuck to his skin.

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