Going back to your questoin about whether or not many dogs end up needing medication..........

Amoungst many others on this forum I have a dog with just Chiari-like Malformation who requires medication so even if you do end up one of the lucky ones with out the SM diagnosis, you could still be faced with one of the many many symptomatic CM dogs that require just as much care as the SM diagnosed dogs.

CM is present in over 90% of all Cavaliers, not just in the UK but worldwide