Join Date: May 2012
Location: Toronto, Ontario, Canada
My horse has something that sounds like this on one side of his withers. He is a dark brown/dark bay and this spot grew in light brown. It also sweats, all the time almost. I showed it to my vet he figures it might have been from an injury that affected the nerve. Told me its nothing to worry about though.
I could be wrong in your situation though. Pictures would be helpful though in case it is something more serious :)
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