I know that at least three of the Honorhall kids can be adopted, not sure about Francis yet. And the little one in Whiterun. Since I don't have the DLC yet (29 days and counting, with luck), I don't know who all else.
so, only human children, then?
its a shame they didnt add children from the other races... i am a dunmer, and my wife is an argonian... gonna be one hell of a weird family having a human child.
hope we can expect children of other races to be included in future DLC... it'd be nice to have an argonian daughter and dunmer son.
I agree that Argonian and Dunmer kids should have been in the game, adoptable or not; given Skyrim's demographics, the presence of younglings of those races makes sense. But we have the adoption mechnaic, and if future DLC (a trip to Morrowind maybe) adds kids of those races, making some of them adoptable should be a simple matter for Bethesda.
Actually, the concept you're describing actually reminds me of a kids' book I read, the theme being adoption. It was about a mother bear with four adopted kids: a bird, an alligator, a pig, and a hippopotamus.