Maybe someone here will post the site about the testing again,It's somewhere on the Forum.
I don't know if you've read any of Shae's posts,but she could tell you all about it.
I do not have a dog,I have three cats,but Eagle Pack,Wellness(very pricey),Nutro, are all good brands,I am sure other dog-owners could give you more.
I feed my cats,Nutro and"Chicken-soup-for-cat-lovers-soul"+Nutro canned food,finally got them off Fancy Feast
