Before I knew any better, I fed Rudy Beneful. He loved it also. But things I've learned from this site and when we adopted our Shih Tzu, I have since found out, Beneful is not good for our dogs. The adoption lady that I talked to when we adopted our Lucky ( Shih Tzu ) said feeding Beneful would be like us eating at McDonalds every single day of our life.
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Don't be too hard on yourself, you didn't know any better, just like me. But you asked a very good question and thru that question your finding out information that will benefit your furbabies.