They are quite cute. I've never heard of them (and am honestly not a giant terrier fan) but always love hearing of people breeding dogs for a purpose rather than looks or pedigree. How often do your pups tend to work out for vermin control? How did you choose your breeding stock and know they were truly going to pass on the qualities you were hoping for? Any specific way you paired them up? (I find selective breeding, especially for a purpose, fascinating.)