The vet quickly called Scott back at lunch. She said that Layla's body might just be getting used to the new food and she will adjust on her own, or there may be something more going on. She was in the middle of something though, and would call us back probably tonight.
I also asked about this on Dodgerslist, and I was told that Medi-Cal SO is designed to have a high salt content, which makes dogs thirsty and flushes out their systems with all the water they drink. I guess that's fine when the dog has the option to pee whenever it wants, but it doesn't help much in our situation. This person also told me that a high protein diet might help to make the urine more acidic and get rid of crystals that way.
So those are some things I can bring up to the vet when we get a chance to talk to her.
__________________ Lindsey and Layla, Lucy, and Kash |