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When to take dog to emergency vet for bloody stool and vomiting?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 15 lbs

Hi, my dog didn't drink much water on Saturday and there was blood in his stool Sunday AM. Things were then normal until Tuesday PM when he threw up 3 times. Then, there was blood in his stool Wednesday AM. His appetite and energy levels were normal until today. He tried to throw up this AM (nothing came out) and there was a SLIGHT amount of blood in his poop and doesn't want his treats like he typically does. I have a vet appointment on Sunday, but at what point should I seek emergency care?

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on September 24th, 2020

Hello. A little blood in the stool is often nothing to be overly concerned about as it is probably only parasites or inflammation, possibly from colitis. But with vomiting, we now have to be concerned that Winston has something a bit more serious, like a more severe intestinal infection, an intestinal foreign body/blockage, inflammatory bowel disease or even cancer. If he is keeping most of his food & water down, & the blood in his stool in minimal & overall he seems pretty comfortable, then it is OK to wait to have him seen on Sunday. If anything changes & he seems to be getting worse, then do take him in sooner. Hopefully, Winston will be back to his old self soon. Thanks for contacting Petco Pet Education Center, formerly Petcoach.

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