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My puppy has bloody poop. Is teething the reason or something serious?

Updated On September 23rd, 2025

Pet's info: Dog | Cavalier King Charles Spaniel | Female | unspayed | 3 months and 6 days old

Our little puppy ruby we've had 6 weeks, all her jabs up to date. Still having very bloody poops. We are careful with what she eats and have been recommended AVA Food that's hypoallergenic. She's biting and chewing everything so she's teething? Is this why there's blood or???

2 Answers

Most Helpful Answer

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Answered By Mirissa Duncil, DVM

Veterinarian

Published on July 4th, 2017

Hi there. Poor Ruby! It definitely sounds like she's teething-puppies go through this stage of putting everything in their mouths the same as humans. Since Ruby is not 4 months or more yet, she is still not considered fully vaccinated. If her vaccines were home vaccines and are from a store over the counter-sometimes they are improperly stored and provide poor immunity. Any time there is blood in the stool it warrants a trip to your veterinarian right away, as your puppy can be very sick when showing this symptom. They will probably also perform a fecal test to rule out any parasites. My best to you and Ruby and I hope his helps!

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on

    Yes she is teething and No this is not why she has bloody poop. you need to take her to the vet in order to have some tests done (fecal exams) there are several things that needs to be ruled out such as bacterial infection and Giardia for example. it could also be food allergy but infectious agents need to be ruled out first.

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