[alaskayorkie]

My senior Yorkie had something the vet described as crystals in his urine. I could see a grainy material when the urine dried. It was something they treated with a prescription dog food, and it never became a major health problem in his life. I've read where it can happen to younger dogs too.

I'm not sure that's your problem, but I wanted to give you some hope. You might google "crystals in dog urine" if you want more information on that.

Good luck.