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Is dark yellow urine a sign of dehydration in my dog after diarrhea?

Updated On September 23rd, 2025

Pet's info: Dog | Shih Tzu | Male | neutered | 7 years and 6 months old | 12 lbs

Can my dog’s urine be a darker or brighter yellow if he has not drank much water? He just got over a mild case of diarrhea from yesterday. It’s normal bowels now. I left water bowel out but he mainly eats wet food but didn’t get much as usual until diarrhea passed. Thank you. He’s playful etc. I fed him about 4 ounces of water mixed with dog safe broth about 30 mins ago.

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1 Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on August 12th, 2020

Hello. The color of urine can vary throughout the day, based on how much fluids have been consumed, how long the urine was held before urinating, even based on possible dyes in food, medications & treats. I would not be too concerned unless the urine takes on a brownish, or bloody tinge, or if Romeo seems to be drinking excessive amounts of water. Any concerns, your veterinarian can collect & analyze a urine sample ( but please stay away from the urine tests you can buy in pet stores, they are worthless ). Thanks for contacting Petco Pet Education Center, formerly Petcoach.

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