We raise Rat Terriers and had them dig under a cement pad a good 7-10 feet. Even had a female about to whelp get in hole and I had to lay under steps in sand with a hose and keep quirting a little bit and calling before she came out. I was covered in sand but she was able to have pups with me there. Had one hole I kept waiting for chinamen to come out of. But they do have such fun. Our Golden is not as bad a digging.[ATTACH=CONFIG]468380[/ATTACH]