Petco Text Logo
Petco Pet Logo

Why does my new dog still have diarrhea after vet visit & diet change?

Updated On September 23rd, 2025

I got her a few days ago and she has had diarrhea since I've had her I took her to the vet and they did a fecal exam but everything was negative. The people I had bought her from had started her on pedigree and then switched her to ol Roy and when I picked her up they said they wasn't sure what food she was on now?! So I had her examined and put her on royal canin as per the veterinarian suggestion and it's been 2 days and she still has diarrhea. She had her first shots 2 days ago and wormed

1 Answer

Most Helpful Answer

Image profile

Answered By Joy Fuhrman, DVM, MBA, CPA

Veterinarian

Published on February 10th, 2017

Dogs will frequently develop diarrhea from a diet change which is why it is recommended to slowly transition your pet from one food to another. Since worms have been ruled out, it is likely that this is your pup's issue, although there may be many reasons for diarrhea including infection, allergies and other disorders. If the diarrhea does not resolve in another day or two, you should take her back to your veterinarian to determine the underlying cause of the diarrhea.

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