Ok, when we first got Jose, we bought nutriphase (pr something like that) chinchilla food for him. Well, the last time I went to the pet store they were out of that brand, so I bought the Mazuri brand chinchilla pellets. Well I know that I had read on here somewhere that when you change their brand of food, you have to do it slowly, a little at a time. Well, that didn't happen with Jose. I put a little of the new Mazuri food in his bowl and mixed it up with his old food. Well, wouldn't you know it, the smart little booger apparently likes the Mazuri brand food better. He picked out the Mazuri food and ate it and left his old food alone! They are smart little fellers I guess. The reason I knew he was doing that was because the Mazuri food looks a little different than the nutriphase food. So I could tell that the Mazuri pellets were gone and the others one. Every day Jose just amazes me more and more!