Neighbor woman who lived next farm just down the road a little ways from my uncle Bob's place had a registered female Doberman. Dog usually had free run of her place but was coming in 1st heat and woman wasn't ready to let her have pups yet and especially not mixed breed so she asked old uncle Bob how she could keep it from happening as she didn't want to keep her dog locked up in the house all day while she was at work. Uncle Bob told her to just tie her dog up in her barn. She did just that but her dog still got bred by just about every male dog within smelling distance. Told uncle Bob that tieing her dog up in the barn didn't work. Uncle Bob said the only way it wouldn't have worked is if the male dogs found some way to get to inside the barn. Neighbor woman got a puzzled look on her face and said, --- 'You mean I was supposed to close the barn doors???'