Not to fuel the fire, but sometimes it's not their fault. Our local Petco and another smaller chain-I believe (they sell puppies and Iowa has the most puppy mills in the US, so I do NOT support them) get some of their ball pythons from local breeders that can't get their normals to eat and want to get rid of them ASAP. Unfortunately that happens and the pet stores have to deal with it. Not to mention they get most of their ball pythons from distributors and we all know those ball pythons do not all come healthy and eating. Keeping them in display tanks is the pet store's issue. If they get snakes in that aren't eating they aren't going to get them eating in those tanks.