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Why is my dog lethargic, foaming at mouth, and refusing to drink?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 1 year old

My dog has white foam under its mouth and seems very sick and just keeps sleeping and lying down .. He would take a walk and eat but does not drink

2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 29th, 2016

There are a couple of things that cause foaming at the mouth. These include upset stomach (nausea), stress, illness, poisoning, exposure to foul-tasting substances, or dental disease. For now, I would monitor Shreder. Try to get him to drink some cool water, as he needs to stay hydrated. If he is still foaming at the mouth in the morning, I would take him into the vet to determine what is the cause of the foaming at the mouth, and how to treat it. If Shreder starts vomiting, becomes extremely lethargic, vomits water, shows difficulty breathing, or begins to have diarrhea, I would take him into your vet right away.

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15Pet Parents found this answer helpful

Other Answers

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on

    This could be due to him feeling nauseated. You need to take him to the vet to get an anti nausea shot and he might need a blood test done. This is usually caused due to a gastrointestinal condition.

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    14Pet Parents found this answer helpful

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