“Blood in the stools that is red, is undigested blood. This is a sign of the colon lining being irritated. This can be from something like pieces of bone in the stool, from diarrhea”.
“If the stools are soft, there may be colitis, inflammation of the colon lining”.
“It might be better on its own in a few days. If is not better, I would start with a microscopic exam of a stool sample to check for parasites. Not all parasites are worms, and most are too small to see without a microscope”.
Above are excerpts in response to a specific question about a dog and answered by a veterinarian from https://www.justanswer.com/dog-health/bvnrf-wrong-beagle-blood-stools.html
Hope this helps!
