The breeder I got Dougal from has about 7 rabbits or more who are all healthy and gorgeous and 1 is 8 and 1 lived almost 8 years and the others prob be near to that or a bit less that are still going and she has an 8 year old going, they look very healthy and you can tell they are and she feeds rabbit royale to all of hers. I did not know much about rabbit food and rabbits as it ihas been years since I owned 1 and I was just a kid but I have read rabbit royale is very good and obviously if she feeds hers it they are. I would not have changed over to pellets if I had known but he is happy on the excelbut luckily and has taken well to them and loves them and thrives from them. Rabbit royale is not yer rubbish mix you can get from pet shops, they have the rubbish versions and good versions and it all depends on the rabbit too. Some don't take to excel well and others thrive, I should imagine it is same with royale??? maybe I am wrong, it's just what I think really.