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My dog is sick after a hot walk. Is it heat exhaustion? What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Male | neutered

I Live in portland OR, a couple hours ago I took my dog on a walk, its fairly hot today but it was a short walk and i brung ice water for him, the park also had water for him that he drank out of. he is now acting very sick, walking slow, pooping a watery substance and throwing up watery clear goo. i dont know what to do to help him. pleas ehelp me

2 Answers

Most Helpful Answer

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Answered By Kevin Sanada, DVM

Veterinarian

Published on August 4th, 2017

Given the history of being a hot day and the signs he is showing, it's definitely possible that Manny has heat exhaustion. This is an emergency and can be verified by placing a thermometer in the armpit and taking his temperature. If it's over 103F, then you need to cool him down as soon as possible. Follow these guidelines: http://www.petmd.com/dog/emergency/common-emergencies/e_dg_heat_stroke While getting the temperature down quickly is the most important thing, it will be best to follow-up with a visit to the vet to treat dehydration and possible organ damage. If it turns out that Manny's temperature is normal, then it would indicate that Manny has a severe gastrointestinal disease and he would need to visit a vet for treatment. I hope this helps.

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    Answered By Jenna Beyer, DVM, MBA, cVMA

    Veterinarian, Certified Veterinary Acupuncturist

    Published on

    Even though he had access to water, it is still possible that Manny is experienceing heat stress or stroke. I would recommend that you take him to a vet as soon as possible before his symptoms get worse. Most often IV fluids to support blood pressure and decrease core temperature will help. Other causes of vomiting and diarrhea include food intolerance, food allergies, intestinal parasites, dietary indiscretion, bacterial or viral infection, stress colitis, autoimmune disease, systemic disease (liver, kidney, pancreas, diabetes), among others, but given the history you provided, heat stress would be at the top of my list.

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