In spring 2007, it was quietly included in wheat gluten and rice imported from China. These products ended up in pet food along with [[melamine]], and the combination has killed many dogs and cats. The motivation may have been to substitute cyanuric acid for a more expensive ingredient, thereby saving the manufacturer money. | In spring 2007, it was quietly included in wheat gluten and rice imported from China. These products ended up in pet food along with [[melamine]], and the combination has killed many dogs and cats. The motivation may have been to substitute cyanuric acid for a more expensive ingredient, thereby saving the manufacturer money. |