most dogs will kill a rat or a rabbit, but not all ,and there are standards that we all have as well as the digging boys , i have seen plenty of video of lads digging with upto 3 terriers to ground at once , are these working terriers cos they have to work in a gang ,just cos it don,t go to ground ,don,t make it a non-worker , i use my dogs for rats and rabbits , its my job , so they do a job of work , they will also go to ground and graft , but i tend to not let them these days , cos i cannot afford to have them off work for any period of time, they are still working terriers