The labs I've known have been happy diggers. I think it's gotta be something like direct wiring to their pleasure center. My poodle loves to get his dig on at

The labs I've known have been happy diggers. I think it's gotta be something like direct wiring to their pleasure center. My poodle loves to get his dig on at the beach. Really goes to town. To the point of exhaustion. Once he experienced sand, he stopped digging in our yard. I imagine it just wasn't as fun any more, comparatively.