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My puppy has bloody diarrhea & vomiting. Is it coccidia or parvo?

Updated On September 23rd, 2025

Pet's info: Dog | American Bully | Male | 2 months and 6 days old | 15 lbs

What are distinctive symptoms from coccidia and parvo. My 9 week old puppies have diarrhea and one has bloody diarrhea (loose stool). They started off throwing up and had watery stool. I kept them hydrated and now their poop is thicker but not solid. My vet appointment is Monday. I'm trying to keep them stable until then. Additional info: They had their first shot and 2 dewormings. I took them outside on the ground (big mistake)

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Answered By Debi Matlack

Veterinary Technician

Published on March 5th, 2021

Coccidia symptoms include watery, mucousy diarrhea. explosive diarrhea that may eventually become bloody, lethargy and weakness, dehydration, abdominal discomfort and tenderness, vomiting., weight loss, and little or no appetite. The symptoms for parvo are very similar. In the picture your puppies still look pretty bright so this is a very good sign. Use unflavored Pedialyte or low sodium chicken broth to keep them hydrated. If they will eat, feed them small amounts of their regular puppy food, moistened with broth or Pedialyte to encourage them. If they continue to vomit though you may want to hold off on solid food as vomiting will dehydrate them faster and undo the good work you've been doing.

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