I truly do not know where you people get your information from, but Blue Buffalo is a family owned company and is not affiliated with Purina or any other company for that matter.
Honestly, it's disturbing to see how people just blindly believe everything they read on the Internet without first verfying the information.
And, may I add, that my dog is doing just GREAT on Blue Buffalo. He actually had the runs when we first brought him home (we adopted him from a rescue organization and he was being fed Authority at the place he was kenneled at) but since we put him on Blue Buffalo the runs cleared up in just 3 days!
So, all you Blue Buffalo haters, get your facts straight!
And just for the record... I am just a DOG OWNER and in no way affiliated with Blue Buffalo or any other dog food or pet product company .