Hadn't heard of this group before.
http://www.ngpfma.org/remember-the-alamo-rad-cat/Home page:
http://www.ngpfma.org/Next Generation Pet Food Manufacturers Association represents pet food and treat manufacturers who use food ingredients as defined by 21 USC 321(f) (“food” means … articles used for food or drink for man or other animals) and do not violate 21 USC 342(a)(5) with adulterants (“A food shall be deemed adulterated…if it is, in whole or in part, the product of a diseased animal or of an animal which had died otherwise than by slaughter”) .