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My 3-month puppy has red diarrhea and is lethargic. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 3 months and 20 days old | 10 lbs

My three month old puppy has had red in her diarrhea and has been lethargic, I don't know what the cause could be, she's still eating and drinking and no weight loss.

1 Answer

Most Helpful Answer

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Answered By Dr. Leigh, DVM

Veterinarian

Published on August 31st, 2017

She could have a parasite, infection, or some colitis from something she ate. It is a little concerning that she is lethargic. Take a stool sample to your vet and have it tested for parasites. She may need to be dewormed. You could also offer her a bland diet, like boiled chicken and white rice and see if that helps. If her signs persist or worsen then she needs to be examined by a vet to determine the cause.

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