I know many of you like to give your rats Inova Senior dog food because it has just the right amount of protein and fat and whatever. I read today on their website that they're changing the formula of the Senior to the new "Senior Plus" and it will be the same except for protein and fat content. The protein will now be up in the 20% range (24% I think) and fat is increasing from 8 to 10%. Just so you know! If you want to stock up while you still can before they change it!