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My puppy has worms, lost weight, won't eat, vomits. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Toy Poodle | Male | unneutered | 2 months and 20 days old

My puppy has lost so much weight, won’t eat, vomits, has been lazy. Checked his poop, and he has worms.. what do I do?

2 Answers

Most Helpful Answer

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Answered By Amy S. Eutsey, DVM

Veterinarian

Published on November 15th, 2017

Olaf is very young and puppies can really deteriorate quickly when they don't feel well. He really needs to be seen by a veterinarian as soon as possible to determine the extent of the problem. If it is all due to intestinal parasites, your vet can do a fecal test to determine how many types of worms he has and get the appropriate medication for him. He may have other issues, he may benefit from a special high calorie prescription food for a short time to build him back up.

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    Answered By Kevin Sanada, DVM

    Veterinarian

    Published on

    I recommend taking Olaf to the vet sometime soon. Worms are commonly seen with puppies and can cause some of the problems you described, but it's not typical for them to cause this many problems. It's possible that the worms are a coincidental finding and that something else is causing Olaf to be sick and loose weight. The vet will be able to identify and treat for the worms; and can help identify if there is any other cause for this problem. Puppies can quickly get dangerously skinny during these conditions, so I recommend taking Olaf to the vet in the next day or two to keep things from getting worse. I hope that helps and Olaf gets better soon.

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