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My dog is losing weight, pooping a lot, and tired. Does he have worms?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Male | neutered | 50 lbs

What are signs of internal parasites in dogs? My dog has been under weight for a long time. He poops a lot and often. He sleeps almost all the time. He eats and drinks fine. How would I be able to tell if he has a parasite?

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on January 3rd, 2019

The best way to know if Lewis has parasites would be to have his feces checked for them by a veterinarian. Signs of parasites can vary from no signs to weigh loss, diarrhea/vomiting and lethargy. It depends on what type of parasites are present and how many are there. Some parasites can also spread to people. There are many reasons pets can be underweight and knowing the parasite status is important. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach.

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