This forum is for general pet health questions, such as questions about medications, parasites, vaccines, infectious diseases, breed specific and genetic problems.
You have posted this in the Equine forum, but I found you. I've asked MH to move you to the General Health forum.
this dog is clearly sick and needs to see a veterinarian. I could write paragraphs as to all the potential causes of these symptoms, but I can say that exams and tests will have to be run and then appropriate treatment given.
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