Yep I'd definitely call whatever humane society covers that area as well as the health department (leaving numerous dead animals lying out on the sales floor has got to be some sort of health code violation one would think). Let them know you intend to follow up and expect this situation to be resolved quickly. That's just disgusting Pat and I commend you for walking out without getting into it with the idiots who ran the place. That must have taken some willpower but it's better to make the authorities deal with him and get this poor creatures out of that hell.