Man I appreciate all the advice, suggestions and help.
I truly believe it's something to do with the actual digestive process and not something disrupting the process (worms, parasites, protozoa, etc.).......Like I said, I'll go through with the 5 days of Zole and TMZ to see what that does and if no change still, I'll have to get him in to a vet I guess.

And not to be dramatic, he's not thin,,,,,,he's boney as hell. Literally a freakin nazi war camp skeleton.

Here's something else I noticed. He had a couple of cuts on his ears when I got him two weeks ago. They look exactly the same. No improvement or healing process appears to be in affect. I wonder if this is indicative of anything?

It's strange too as he's an extremely happy dog. He wags his tail and goes bonkers for his feed at feed time. I like him very much and like I've stated, he's off of a dog I thought a lot of, so I'd love to pull him through. I'll keep everyone posted.

Thanks!