Petco Text Logo
Petco Pet Logo

My dog is vomiting, lethargic, and has diarrhea then constipation?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Male | neutered | 40 lbs

Titan hasn’t moved from his bed for 12 hours now - I can hear things going on in his stomach non-stop (laying next to him, his tummy grumbles non-stop). Yesterday he vomited twice, then went outside and had some diarrhea, and looked constipated. This has never happened and I am quite concerned.

1 Answer

Most Helpful Answer

Image profile

Answered By Andrea M. Brodie, DVM

Veterinarian

Published on October 17th, 2018

If Titan has diarrhea and then appears constipated, this is an emergency as he may have an intestinal blockage and he would need to be seen by a veterinarian right away. However if he is just vomiting and has diarrhea and is still eating and drinking try the following: 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, an intestinal blockage, bacterial infection, viral infection, the weather, food change, stress, etc.  I would fast Titan for 24 hours and then put him on bland food for two days, 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