It's meant to be full of rubbish but my mums dog has been on it since she was a pup, she's now ten and very healthy considering the reviews on it.
My dog was on it for years, it was the only thing she would eat. She was slightly overweight, but not much, and had awful breath, but I put it down to all the treats I used to give her, things I shouldn't really
She had none of the other things being listed though, hyper, aggression etc. She lived to a good age of 14, and had a very happy life
Thanks for the links Jenny.
xx