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Updated on September 23rd, 2025
Pet's info: Dog | Border Collie | Male | unneutered | 13 years and 8 months old
My 13 yr old dog has had diarrhea with undigested food and grey patches for about 4 months. He has lost enough weight you can see his bones and behaving like he is starving no matter how much he eats. He doesnt seem in pain either
2 Answers

Answered By Dr. Melanie, BVSc MS
Veterinarian
Published on July 30th, 2017
Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS
Veterinarian
Published on January 13th, 2019
These signs could be compatible with an endocrine disease (Cushing's disease, diabetes), a metabolic disorder (kidney disease or liver diseases for example).
A check up, a blood tests and urine analysis would be required to determine the underlying cause more specifically and treat appropriately.
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