do I need to mix the old with the new and make it more of a transition? Also, after finding this site I started buying canned kitten food (Iams kitten) but is it ok to give him a variety of brand names? Shadow (his name) did not like the Iams kitten that much but he ate some of it. Anyway, I always heard with dogs you dont want to abrubly change the food like that but is it different for cats? Thanks!