It interests me that none of the beasts of Narnia were offered the temptation of the apple. The Witch, from elsewhere, for whom taking it was a foregone conclusion; Digory, from elsewhere, who made a real choice-- and so there are the major powers of Narnia, evil from elsewhere and fallible good from elsewhere. It makes me wonder if Lewis means us to view the beasts as on some level unfallen, and yet that can't be right, or they would all listen when Aslan calls them in TLB.

Which is to say, it is so very odd in some ways that Narnia has no humans of its own. But I suppose then he'd be writing Perelandra, which, after all, he eventually did elsewhere.