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Why is my dog stumbling with a digestive ulcer and elevated BUN?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | neutered | 13 years and 11 months old | 5.1 lbs

My dog has an elevated BUN but not creatine. He has been diagnosed (by an emergency vet) with a digestive ulcer. He is stumbling around like he can't move his back legs. How are these things related???

1 Answer

Most Helpful Answer

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Answered By Ann Dion, DVM

Veterinarian

Published on March 26th, 2017

The BUN could be elevated due to dehydration. This can occur with gastritis and an ulcer. If your dog has an ulcer that can be painful or can perforate or cause blood loss. All of these can cause weakness that can appear as no being able to walk well. If he is happy and bright otherwise and just having problems with his back legs he could have spinal compression or degenerative myelopathy. Back pain can sometimes look like stomach pain. I would have him reassessed in any of these circumstances

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