Petco Text Logo
Petco Pet Logo

My 8-month puppy has diarrhea, threw up, and won't eat. What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | unneutered | 8 months and 3 days old | 7.5 lbs

My 8 month old puppy has had diarrhea & threw up once early this morning. We can hear his tummy making noises & he doesn’t want anything to eat or drink. Not sure what to do for him. He is up to date on all of his shots.

1 Answer

Most Helpful Answer

Image profile

Answered By Andrea M. Brodie, DVM

Veterinarian

Published on May 28th, 2018

Diarrhea and throwing up can have many causes. It is basically a problem with the stomach and intestines caused by a food over sensitivity, eating something that does not agree with the dog, intestinal parasites, bacterial infection, viral infection, the weather, food change, stress, etc. I would put Milo on bland food for a day or two, such as boiled white rice and boiled white boneless chicken meat, fed in small quantities over several feeds and then transition back to his regular food slowly over a few days. If this does not clear up the diarrhea or if the vomiting increases, or if he gets lethargic, he needs to see a veterinarian for an exam as there may be something more serious such as an infection going on.

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