Out of a desire for companionship, then.

[ Isn't it nice to have one's reasons for doing something boiled down? His smile is bright, if not a little bit cheery. ]

I suppose every boy wants a dog. [ He tips his chin up as he tries to remember what he wanted when he was a child, but that was so long ago that he can't actually recall what it might have been. ] It's one of those fundamentals of childhood, yeah?

[ Even though he is totting the corpses, he leans to the side so that he can nudge Hector's shoulder with his own. ]

But from what you're saying, that man did protest to an undead dog, huh?