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Why is my puppy pooping blood after deworming? Should I worry?

Updated On September 23rd, 2025

Pet's info: Dog | French Bulldog | Male | 7 months and 2 days old | 26.455 lbs

Hi I have a 7 month old frenchie. I wormed him yesterday. This morning at 6am he puked the bile in his tummy & has a soft stool with some blood. After he had a runny stool with blood & blood began to drip from his rectum. There appeared to be 2 worms in the stool. I brought him to the vet & she said the worms could have caused this & gave him antibiotics. Can you help please as I am just worried.! He’s in good form and id playing with his brother.

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on August 19th, 2018

Trust your vet, your vet is correct. This could be caused by the worms, especially hook worms. Your are doing everything necessary in this case. THe worms are dead now (repeat the worming 2-3 weeks after this one), and antibiotics are neccessary because there was bleeding and bacteria from the gut could possibly enter the rest of the body. The antibiotic should catch and kill those bacteria. As long as he is in good form, eating, drinking and playing, all should be well.

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