also some dogs never have a symptom at all and have a shunt and it shows up later as i helped a dog with 3 shunts and no seizures, nothing but got bladder stones at 4 and when they did bile acids he had a high bile acid and was operated on for stones and he had 3 shunts

so they could not repair the shunts -- it is better to repair when young so more shunts do not develop as this dog could not have a repair as they can only repair if they have one and the body adapts and blows more shunts if the one is not corrected like happened with this dog
all yorkies and maltese should be bile acid tested per out vet due to the high probability of them having this