Hi all, after reading all these posts when I moved to CH with my staffie x I was very worried about being able to keep him here. However I am happy to say that all is not as bad as the laws make us feel. I moved to Valais las year (which has the 'toughest' regulations about 'dangerous' dogs). My dog was on ANIS as a staffie x and the cantonal vet contacted me after about 6 months to say I had to go through tests, etc with my dog - panic time! If you have owned your dog before you move here it is fine - we are not allowed to buy a new dog that is on the list.
However he has now had a vet check - which basically involved the vet prodding him all over to make sure he did not attack. There was supposed to be a test to see how he reacted to other dogs but maybe this occurred when we sat in the waiting room for about 15 minutes beforehand with all the other animals? Then we spent 30 mins answering questions about where we live, garden, walking, how he is with other dogs. Then she told me he was fine and we left! This costs 260CHF and now we have another test later with an official dog trainer to see if he is behaving and whether we need to take up training classes.
The vet advised us that Swiss law dictates he needs to wear a muzzle or mouthguard (simple plastic thing that covers the teeth so if he was to bite there is no damage - which actually means if he is not wearing a muzzle then no-one knows if he is wearing the mouthguard unless they look!). However we have been in CH for almost 2 years and he has never worn a muzzle - even the police just come over and say what a cute dog he is! He is normally on the lead as he is part beagle and liable to run off after a rabbit at a moment's notice but in some areas he is offlead and no-one has ever asked us to put him on-leash. Maybe I just have good neighbours?
Anyway hope this helps others who may be thinking about moving here with their 'dangerous dog'. Our dog loves it here as he is allowed everywhere with us - shops, restaurants, national parks (unlike Oz!).