Why is my puppy lethargic, not eating, dry heaving, and throwing up?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 2 months and 29 days old | 20 lbs
My puppy is lethargic is not eating anything or even reacting to the scent of food like he did and the only water he's drank is what I've been able to get him to take with a cough syrup Syringe he has been dry heaving and occasionally throws up thick slimy fluid
4 Answers
Most Helpful Answer
Published on May 13th, 2019
The most likely diagnosis for a puppy with Jack Jack's symptoms is parvo virus. I suggest you get him to a vet as soon as possible for an exam and parvo test. This is serious and life-threatening. Do not try to continue to treat him at home. He may not have parvo as there are other things that can, of course, cause his symptoms but regardless of what is ailing him he is very sick and needs veterinary intervention.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on July 3rd, 2019
Thank you for submitting your question regarding Jack. I recommend asking his veterinarian to prescribe an anti-nausea medication such as Cerenia. You can also ask about an appetite stimulant such as Entyce. If these options do not help, then I recommend further testing to look for another cause contributing to his disease. I hope this information helps!
1Pet Parents found this answer helpful
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Published on November 11th, 2019
Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Jack. I wouldn't be too worried just yet as he has only had one loose stool. I can give you a home remedy to see if that helps. Feed him a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the diarrhea continues on the bland diet, he starts vomiting food, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. I hope this helps!
1Pet Parents found this answer helpful
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Published on July 28th, 2018
This kind of chronic intermittent vomiting and diarrhea can be common in dogs and can have a number of different causes. Food sensitivity or a sensitive stomach is possible, as are intestinal parasites, metabolic problems like kidney disease, or even a hormonal disease like Addison's disease. I would recommend following up with your vet and seeing if there are any more tests that would be recommended like blood work or a fecal analysis. Or, your vet may want to change Jack's diet to something hypoallergenic as a next step.
1Pet Parents found this answer helpful
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