a dog can only be detained by smart people,,,,, how many smart people are there out there?
and if a coop cant be built strong enough to keep a dog out,,, how come you expect something to be built strong enough to keep them IN?
if ya letr ya birds free range,, then you want them to be in a natural setting right???? well,, birds, dogs, coyotes are all a part of nature,, and they all NATURALLY kill for their food,,
and if a dog can get into your coop,,, then ya need to be taught by a carpenter how to REALLY build.
but,, it is always easier to just blame the idiot dog owner,,, that way ya wont have to do anything extra to fullfill your responsibility as a "owner/ protector of ya pets.