I have to watch all the time too. Like even at dog shows- they are fine. The little dogs on a leash. But I always know- to keep them leashed as the drive to chase is too strong. The same docile quiet couch pototoes I have can run 35 mph on open flat, and not tire for miles at a cruising speed of 20. My breed, if they get lost, can stay lost for years... and go very far.
I think silkies are really cute, and I would love to have some chickens. I have 18 acres up here but I also know my dogs...