[Super jelly.]

Maybe if your Dusknoir hates you or something. I dunno, it's never really been an issue for me. I trust Elliot with my life. [He is the best ghost dad and that's really all there is to say on the matter.]

But most ghost types don't exactly...eat normal food. Like Litwick, for example, eats life energy. Misdreavus eats fear, and surely you already know about the move Dream Eater. It's not that they can't eat normal Pokemon food, like berries and stuff, it's just that they don't really have to.