When they come away after half an hour they are jackers end of no excuses,what addition would they be say if you were 3ft down on a 6ft dig to find the dog behind you on the sod.People that keep that sort of dog,well thats there buisness,but if they breed these and then sell them on as workers then its a different ball game,more shite been knocked about.A terrier that walkes of a fox after 20..30min is in my opinion not worth its grub.
I have worked terriers for 15 year now.The terriers i kept 10 years ago were different dogs than i keep today.I was a keeper for years and a dog that bayed