No, the Fancy Feast itself. It seems like maybe walmart has a lower quality of it or something. :\ I've heard it before, that they make the manufacturers produce lower quality, but I just never wanted to believe it, I thought it was just crazy paranoid people.
it isn't name brand foods that walmart screws with so much, the thing they do is that they don't list ingredients on their house brands so you can't comparison shop. I don't shop there in the first place, but if I did I positively would not buy house brands without ingredient lists. I often buy Kroger/king soopers/private selection house brands if they're exactly the same as a name brand product i want, but I check first. maybe some people don't.
the same thing has happened to me with Wellness, as far as one batch being more solid and one not even holding its shape out of the can, but funny thing is: my cats liked the soupier versions better. (???) it has happened several times, the only flavors I buy are plain chicken and plain turkey but none of it has ever been bad.
the ability of walmart to screw with nationwide brands? I really doubt it but nothing would surprise me. I don't think anyone has to make up shady things they do though, it would be enough to keep to the facts.
I don't see how it would be possible for them to "force" a company to produce a lower quality product for them, because then that would reflect on the brand itself and not so much Walmart.