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What's wrong with my 3-month-old puppy's diarrhea and mucus?

Updated On September 23rd, 2025

Pet's info: Dog | Poodle | Female | unspayed | 5 lbs

Hello, I have a 3-month-old puppy with liquid stools and mucus several times a day. What may be going on with it?

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on December 20th, 2018

Diarrhea can be caused by a food sensitivity, dietary indiscretion, intestinal parasites, an intestinal blockage, bacterial infection, viral infection, the weather, food change, stress, etc.  I would fast Lili for 12 hours and then put her 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 regular food slowly over a few days. If this does not clear up the diarrhea or if the vomiting increases, or if your dog gets lethargic, she needs to see a veterinarian for an exam as there may be something more serious such as an infection going on.

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