I have a purebred black lab. I got a purebred because I THOUGHT I would know what to expect. This numbskull has killed 3 of my hens, I can't trust her with them at all. I saw her pawing a hen on the ground through the kitchen window and ran outside scolding her. she KNEW she had done wrong. The chicken ran off to die, presumably. The next morning, when I let the flock out to free range, there was my hen,looking quite ruffled. I was glad and picked her up. That is when I noticed she had a rip in her ribcage next to the spine about an inch wide and 3 inches long. I could actually see down into her chest cavity. **** that dog! The hen had to be in shock, so I put her down humanely. I resisted the temptation to put that bloody dog down as well. Kept reminding myself how much I paid for her. That's the only thing that saved her. J.A.