Henry has suddenly decided he is tired of eating Purina One Dry Cat Food. So I bought some Friskies (Dry). He gobbled it up for a day but now he won't touch it. I went back to Purina One and he has eaten a bit of it but it appears he is certainly tired of it. Fancy feast doesn't strike his fancy either. Anyone have any suggestions. This is beginning to cost me some money. Thanks in Advance for any advice.