my puppy has been eating Purina Pro Plan since day 1, he just turned 1 year in Feb, and his interest in his old food was drastically down, since we switched over to Petzyo, he has regained interest immediately, we can see how much he loves this Kangaroo mix, he is now back to loving his meals! I think Petzyo is a brilliant model, because it cuts out all the middle costs associated with store products, as a result we can get better quality food for the same or even lower cost. will stick with this.