Oh, poor Kodi! Poor you! I don't think mine have ever had this - I guess I'd know; when Pamba first got ill, and before Protothecosis was diagnosed after months of no-body knowing anything, clostridium was suspected at one point, but soon discounted. What is the smell like, Karen? Hope the meds work really soon!
I'm not sure how to describe it. Since Kodi eats good food, there is normally very little smell to his poop. All I can say is that Clostridium makes it smell FOUL!!! When I took him in to the vet (fecal too) last year, and she was asking me about his symptoms, I mentioned that his diarrhea smelled REALLY bad. She stopped dead, and said. "I know what's wrong". She immediately too his sample and looked at it under the microscope, where she could see the bacteria. She said that the foul odor is a classic sign, along with bad diarrhea and intestinal cramps.
I guess that a certain number of one strain of clostridium is normal in a dog's gut. But they can get an overgrowth, or get infected with other types. (typically, I guess from contact with another dogs' stools, which Kodi doesn't really have access to)
He did turn around in less than two days on the antibiotics last time, so I hope, especially since we caught it earlier, that he'll feel better soon this time too. I just HOPE he doesn't blow his coat again this time, the way he did last year!!!