Catland: Just read these links

http://www.pandgkills.com
http://peta.org/feat/iams/index.html

Lorriane: Royal Canin is an ok food, there are some who will swear by it, I do my analysis by ingredients only. Every food has the potention to be ok or great depending on the animal. Not every food will work the same. But Royal Canin IS better then SD