Hey,
Tell your Dad that Bs retrieve, they just might keep on running that's the only problem with that! My B, Sahara, loves to retrieve. I have a friend that years back found a B in a shelter and brought it home. Some years later he had his dog out in his back yard while he was working on his truck and his B ran off. Behind his house was thick woods and his B heard hunters and dogs and took off, he never saw his B again. He still thinks to this day that the hunters took his dog for hunting. Personally I would have found those hunters and found out for sure if they indeed had my B. I pity the person that ever hurts or steals my sweet Sahara, I have never seen a person love a dog as much as my husband loves her, and to think he wasn't sure he wanted her, she was quite expensive. It paid off !!!!