Here is a list of foods that test on animals. Alot of them are from the same company (like Alpo and Friskies are both from Purina) but it helps you get an idea.

IAMS, Eukanuba, Alpo, Arthur's, Bakers Complete, Bonio, Bonus, Bounce, Brekkies, Cesar, Chappie, Choice, Choosy, Chunky, Felix, Friskies/Winalo, Go-Cat, Go-Dog, Gourmet, Hills Science Diet, Katkins, Kitekat, Mighty Dog, Omega Complete, Pal, Pedigree, Ralston Purina, Sheba, Spillers, Whiskas.

Edit: By the way, I don't know some of these foods, but the ones I do know are very low-quality. I wonder if there's a connection at all. It makes me think that they don't care about the animals they abuse, so why care about the animals they feed?