Yeah. Basically, it's the difference between "science fiction" and "fantasy". If something is supposed to be "science fiction", then I'd pretty much expect an obvious reptile-analogue to not have milk-giving glands at all (and their hatchlings to be more physically precocious than human babies.) But fantasy? Well, as long as there's some explanation that fits with the fantasy universe, then pretty much anything goes. ie, Argonians having tits - they don't give milk, they give Hist sap (or so I was told by someone somewhere somewhen.) So, technically, a female Argonian might have them outside of the Black Marsh, but not if she's living within it, with regular access to Hist trees. Of course, if they have these glands when they're not accompanied by children, this brings a whole 'nother dimension to their culture I don't really wish to examine.