I don't know what does this product have in it but puppies go crazy when they smell it. My puppies are just a month old, all of them and I was apprehensive it they could eat something hard and crispy as they had never eaten whole foods before but they seem to have taken a liking for it and munch on it like there is no end. Also, my dog is a first time mom and this product really helped when she did not want to feed them milk. I did not really have to put any effort in it, it draws them organically. Also, it has a great smell, so may be that is what makes them happy and crazy.