Fuzzy, I'm sure, won't notice the change...especially if you give him yummy canned food. Or, if you are trying to switch from canned food to a kibble, you can mix it "half and half" at first, then eventually start cutting back on the amount of canned until you are only feeding the kibble. It's a slow process, but it works.

Dogs can tolerate a "quick change" in their food much more quickly than cats can.