Now that the orc alignment/racism thing seems to have blown over, time to move on to a more pressing question about D&D humanoids: Kobolds -- dog-men or mini dragon men?
Starting with Mentzer, I took the dog-like description as more telling than the hairless & scaly description (like I thought that meant they were mangy and diseased) but when later editions made them specifically little crappy dragonmen I didn't oppose it since it was an interesting twist. Anyway, here's the evolution of the kobold for the first 30 years or so. Feel free to chime in in the comments about how you view them.
In Chainmail, they're interchangeable with goblins, and no description given.
In OD&D, they're still just slightly weaker goblins.
Holmes goes with the folkloric description. Interestingly, they've got a save bonus to everything EXCEPT dragon breath.
In AD&D 1E, we get a lot of description, and for the first time they are described as hairless, scaly, and with small horns. The Sutherland illustrations have very dog-like faces, but the bodies are scaly (or wearing chain mail?)
Moldvay is the first time the kobold is described as dog-like. The Errol Otis illustration seems to support my 'diseased' assumption. Mentzer was the first set I owned, but I had seen BX before I got it. So maybe this picture colored my view?
Mentzer's text is nearly identical to Moldvay, but there is no illustration.
AD&D 2E of course gives us more information on kobolds than most people really need, although a lot of it is identical to the 1E information. The DiTerlizzi picture is definitely a hybrid dog-lizard here, which likely shaped their future development by WotC.
And in the Rules Cyclopedia, of course the text is again nearly identical to Mentzer, only adding in the note about spellcasters (from Mentzer's Masters Set).
The indie (and very fun) Kobolds Ate My Baby rejected the reptilian/draconic angle, and made them little furry nasties. I really appreciated that. I don't have a copy of that game to post, though.
Are they dog men? Mini dragon men? Something in-between? Or do you go to the folklore sources and make them evil little fae like redcaps? Something original?