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My 4-month-old puppy is sick, not eating, vomiting, diarrhea

Updated On September 23rd, 2025

Pet's info: Dog | Blue Heeler | Male | 6 months and 1 day old

In the past two days Our 4 month old red heeler has not been eating, has a dry nose and has went from being filled out to very skinny and doesn't want to play at all. All he does is lay around. Also has diaria and is throwing up. What should I do?

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on September 6th, 2017

Hi there! Thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear that Gus is not feeling well. Vomiting, diarrhea and lethargy are quite concerning in any dog, especially puppies because of the diseases they can get such as parvovirus. I recommend that you have him evaluated by your veterinarian for further assessment. They would be able to check for this disease as well as checking for other possibilities such as intestinal worms or other infections. The sooner these diseases are diagnosed the better the outcome tends to be. At the very least, Gus can be started on anti-nausea and anti-diarrhea medications and his hydration status can be checked. Good luck! I am really keeping my fingers crossed that everything goes well with your boy. Best of luck!

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