Petco Text Logo
Petco Pet Logo

Why isn't my dog gaining weight and still has worms after deworming?

Updated On September 23rd, 2025

Pet's info: Dog | Siberian Husky | Female | unspayed | 40 lbs

Hello, I have a dog who appears to not be gaining weight, she does have worms, we gave her deworming treatment, but they appear to still be in side of her, she threw up worms one time but when she pottys it doesn't seem like their expelling out of her, what should we do? Would like to know what this means?

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Elizabeth

Veterinarian

Published on April 4th, 2019

Some pets may need multiple deworming to get rid of all the worms. You must also make sure you have the correct type of dewormer. Some worms are not able to be seen with the naked eye. If Nala has not had her stool examined under a microscope by the veterinarian, I recommend to have this done as it is the most accurate method. Additionally certain heartworm prevention’s can also provide a monthly deworming and can be prescribed by your veterinarian. Best of luck and please feel free to post any additional questions.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored