No question about it: Jack is the diggingest dog I have ever lived with. He's fascinated by our prairie pocket gopher. He will stand for an hour over a hole waiting for one to show up. If it seems fresh (and sometimes I'm sure he can hear them down there working away) he will go to work trying to dig them out. So far I don't think he has caught one. If he ever does I am afraid he will be a gopher-dog instead of a bird-dog. I've given up on keeping him from digging altogether. But I do have to watch him because he is very fast. I got distracted for a few minutes and he had the hole in the picture big enough to almost disappear into in about two minutes flat. No gopher out of that one, but he never seems to get discouraged.