I respect your point Sallyanne, but you keep referring to Peta. I have given two links on this thread and one of them is on youtube.
If you google iams and animal abuse this information is coming from all sources, NOT just Peta.
Here are more websites highlighting Iams, one of which is Border Collie Rescue -
Don't Buy Products From Companies That Support Animal Testing | AnimalsNeedHelp.com
Iams Tests
Please do not say that they are both in cahoots with Peta. There are many more should you wish to verify further.