cant be to bad if lads are digging the big stuff (where its legal) for season after season and still getting results with that Miner blood?surely been more tested than most over here?if the mans still digging them at 10 yr old+?not just 2/3 season wonders being bred every 12 m?like over here?im sorry but being able to work fox,badger,raccoon dog and lots of other things that bite like f**k-is some test for a terrier IMO-atb Bobby