(Twilight): There are books about transracial adoption, although only about griffons - and I read them all, of course. I know Spike may feel like he does not fully belong in either Pony or Dragon world and will probably ask questions I can’t answer, because Princess never answered my questions about his egg. All I know is that I was the only pony asked to hatch it and that everypony was surprised when I did…
 
All I can do is to let him know I love him unconditionally. And offer my full support when he will try to discover who he is and where he belongs.
 
Unless somedragon will show up soon and claim him as her child, that is…