In answer to your original question, there was:

1) The original Dumpster Mutt -- it was sterile, black, a bit thicker than all that came after at .285-inches thick, and had recycled Busse basic handles.

2) The LE -- it's polished, had a logo, and was a bit thinner, I seem to remember .25-inch thick, and also had recycled Busse basic handles.

3) "Second Generation" CG Dumpster Mutts -- this is what I'd call yours. They're a coated .25-inch blade, making them about .26. They have molded Res-C handles and have come in many different colors. Most have logos, though I think some don't. I'd say that this is the most common Mutt, so finding a sheath isn't an issue.

4) MOD, "Military Overrun Dog" or MOD-7 -- it was a special offering from the 12/2007 Razorganza (it was item #7, so that's why MOD-7), limited to less than 50 available to the civilian market -- there was a bet, Dan won it, do a search for details if you're interested. It was basically a double-cut .25-inch logoed Dumpster Mutt, half-serrated and having the last of the Busse basic handles. They came with a kydex sheath, but not up to the standards of anything you'd get from a custom maker.

5) I think ColdOne owns a one-off fully serrated prototype Dumpster Mutt.

6) There was the "Run DMDC!!!... Dumpster Mutt Blow Out!!!" release -- they were Double Cut Dumpster Mutts, logoed, having molded Res-C handles. They were the last knife sold from Texas, before Dan and Patti moved to Ohio so that he could be closer to the production facilities.