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My puppy has diarrhea, vomiting, and won't eat. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | American Bulldog | Male | unneutered | 8 months and 20 days old | 50 lbs

My puppy has been acting funny for about a week now..first his bowel has been irregular;kind of watery every time he goes..and the next day it's normal poop...and I'm only giving him dog food and bottled water. And just yesterday he was vomiting up his food. But only once that he done that and now I'm kind of worried about him,,he pees a whole lot but he's been slacking up on eating his food. And the urine is kind of a dark yellow. I need answers,please help me.

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1 Answer

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Answered By David Darvishian

Veterinarian

Published on September 27th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Beast is gorgeous, sorry to hear that he is having problems. Since the diarrhea has been going on for a week and now he vomited, it's time to see your veterinarian. Diarrhea and vomiting can cause a lot of fluid and electrolyte losses leading to dehydration, weakness, and anorexia (not eating). This cycle, once started will continue unless the cause is determined and treatment is started. Diarrhea/Vomiting can be caused by many things including intestinal parasites, dietary problems, dietary indiscretion (eating things dogs should not eat), bacterial overgrowth, infections (bacterial, viral, other), Irritable bowel syndrome, inflammatory bowel disease, toxin exposure, drugs, problems in other organs outside of the gastrointestinal tract, among many others. Your vet can take a detailed history and do a thorough examination. They can then advise a diagnostic plan to confirm a diagnosis. Fecal/blood/urine tests and x-rays are usually a good starting point. Once a diagnosis is confirmed or suspected, a sound treatment plan can be implemented. Dewormers, fluids, diarrhea medicines, etc can all be used to treat the problem and the associated signs. Good luck with Beast. This could all be due to intestinal worms so this could be (and I hope it is) an easy fix. You could try deworming with Safeguard (fenbendazole) as it's available over the counter if you cannot visit your vet. It's once daily for 3 days mixed with food. Again Good luck.

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