Petco Text Logo
Petco Pet Logo

Unvaccinated puppy vomiting and foul diarrhea. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | unspayed | 2 months and 25 days old

I have a 13 week old Chihuahua shitzu mix and Sunday she vomited up foamy stuff. She had a fever of 101.3. She was fine all day yesterday. Now her stools have a foul smell and looks like melted chocolate and mucus. She hasn't had any shots yet. Her nose is wet, ears are cold, belly is warm. What could be causing this?

1 Answer

Most Helpful Answer

Image profile

Answered By Laura Johnson VMD

Veterinarian

Published on October 25th, 2017

HI, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Little Bit! A normal temperature for a a dog is 100-102 F rectally. A temperature of 101.3 is normal. I don't go by ear temperature, nose wetness or dryness, etc. There sadly is no rhyme or reason to that. I am glad she stopped vomiting and is eating (hopefully). Possible causes of vomiting and diarrhea in a puppy are: intestinal parasites, viral (parvo being the big one) or bacterial infections, ate something gross outside that is upsetting her stomach, food allergy or intolerance or toxin ingestion. If she is eating and not longer vomiting I would feed her a bland diet of boiled chicken or hamburger with rice. Feed 1 cup per 20 lbs per day until 2 days or normal stool. If she is not eating, starts vomiting again or the diarrhea isn't improved by Friday she should see your Vet. Once she is better, it is very important to have her seen by a Vet to start her vaccinations and have her dewormed. I hope this helps and I wish Little Bit a speedy recovery!

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