Maybe for smokes, but I still think that a kitten is a ready warm blood supply for him and having food is more important so it'd be weird to trade it for anything else like cold processed, possibly tested-and-rejected human blood. Maybe he'd get a little otter, a little vole, but it probably wouldn't be an equal trade for a litter of lunchables. He could start a kitten farm... Oh, God, that is a plot bunny I do not want...