We picked up a pound pup (1 yo female) a couple of days ago (she was spayed on Friday), and I found a slimely blood membrane over the stool from last night or early this morning (Monday).
Unfortunately, I don't know if the stool was hers or my older dog (he has Lymphoma - but was checked still in remission last week).
The recently spayed female might have licked her surgery incision and this is her first stool since coming home. Both dogs are eating, drinking and acting like they are fine.
Could the bloody stool be from her Spay surgery? I hate to take both dogs to the vet right away. She had another stool around noon that looked normal, the other dog has not had a stool today.