Hi Ptcbass-
First of all, I’m so sorry for your loss. No wonder you are terrified for your remaining dog. I’m not sure what type of stones your pup has, but like anonymously stated, moisture is one of the most import things you can add to your dog’s diet to help avoid any type of crystals or stones. Feeding fresh or canned food would be the best way to go.
Attached is a link from Dr. Becker with a holistic approach regarding struvite crystals and stones:
http://healthypets.mercola.com/sites/healthypets/archive/2013/09/09/struvite-stones.aspx
Here is another link with a more traditional approach:
http://www.cvm.umn.edu/depts/minnesotaurolithcenter/recommendations/home.html
Please take care and keep us posted!
