With so many serious symptoms, if it was a shunt the liver enzymes really should have been up. Do you have the Bloodwork?
It does sound a lot like kidney failure to me. The weird breath would come with that.
Yes, kidney stones can be secondary to LS, but the vet probably would have caught a liver problem.
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |