Well I don't know what it was I did wrong here but I am not liking this breed much right now. Here is the story. The husband and I have been discussing getting another dog. We like dogs with purpose and use so we decided to get a guardian for our chickens. I have read such GREAT stories on here about the Great Pyrenees Dogs so we decided to get one. Well Friday morning we drove to a lady's house to look at her dogs and we chose a neutered(she has all pups fixed before new homes) 5 month old male that was in a pen mixed with ducks, chickens, turkeys and some goats. He was so sweet and seemed to be good with all the animals he was penned with(since birth). Both parents were also working dogs and wonderful. We take him home and put him in the pen with the chickens and I stayed with them all day to be sure nothing went wrong. Well he was perfect with them and seemed to ignore them more than anything. All was well so I left him in with them overnight. BAD IDEA! We woke up to a horrible sight. 9 dead and 5 wounded. On my sons birthday. I called the breeder who couldn't believe he had killed. She suggested bringing him back and picking an younger pup to grow up with the flock. Needless to say we returned him first thing Sunday morning. Would have been Saturday but we had a birthday party and didn't have time to drive him 2 hours to the breeder. The breeder was very concerned and very sorry that he had caused so much trouble for us that she not only refunded our money, she also gave us money for our birds as well as offered a pup free. We tried to decline the money for the birds but she insisted it was "her fault" since it was one of her pups that had done the damage. She also promised that if sold he would go to a pet only home. We agreed that would be the best option given his behavior. We also couldn't chance another puppy right now since we just lost 9 birds and I have 5 in our "hospital suite" better known as our screened in porch. 3 of the birds are doing much better and will be returned to the flock tomorrow. The other 2 I'm not sure are going to make it. But thats another thread. I was hoping that some of you could maybe tell me what it was I had done wrong in this situation since the breeder said I had done all the right things. He wasn't inside the hen house during the night and when I went out after dark to check on him he was laying at the door quietly. Sometime between then and 8am is when the massacre took place. I must have been overly tired and didn't hear anything. I don't blame the puppy in this. He is afterall, Just a puppy. I just need a hug. I miss my chickies.