$38 : I have a 6year old papillon pooch. In january 2010, he was

Hello, I'm Dr. Bob.
I prescribe Royal Canin and I feed it to my dogs and cat as well.
This is an excellent product. By products are not necessarily a bad thing as, in nature, dogs eat other animals whole, including things that are labeled "by-products".
Over the years, we've found that the closer we can come to a natural diet in dogs, the better they do.
Royal Canin does exactly what we want it to do in helping to minimize the formation of stones, and success is the hardest thing with which to argue!
I wouldn't be concerned with the by-products contained in Royal Canin, but if you would like to try formulating your own food to help with this problem a website called www.balanceit.com offers balanced diet recipes for purchase which would be offer what your dog needs without the by-products.
If you should have further questions, please let me know.

Veterinarian

35 years in practice

View the original article here