My Maltese is very picky and won't eat most treats! He ate Dr Marty's food right off the bat. He is on his third bag and still eating it. He is acting like a puppy again and playing so much more. I should mention he is almost 13 years old. I was starting to worry because he was sleeping so much, now when we go outside he "hunts" like he used to. We did have to adjust when we fed him and now he is regular like clockwork. I am so thankful for this food that helped my baby feel young again.