[Britster]

RC Yorkie and RC Chi are hardly any different at all. I'm sure it'll be fine.

However going from something like Pedigree to Orijen for example, would most likely cause upset.

I rotate foods all the time. We have about 3 that we switch between (I rotate after every 5-6lb bag).

Right now he's on Pure Vita Bison. He LOOOVEED Fromm and it's a fantastic brand, and we were feeding the Beef one, but I never could get his stools where I wanted them. They weren't horrible, just always a bit soft. Every one seems to have great luck on Fromm and I thought I'd give it another shot, thought we could at least have the beef one, but maybe it's another ingredient in there that doesn't agree with him. He also does very well on Earthborn and Acana (but we're no longer feeding Acana due to bag decrease and price increase, and reading reviews on here how the new formula made their yorkies itchy).