Actually, we have been researching this sometime. I found a great site, through byc. Just search great pyrenees on here and read through a couple threads.
He slept in his crate in the chicken coop last night. It killed me. I wanted to go get him and snuggle him, but that is a NO NO. I went out first thing this morning and let him out and fed him and he was happy as could be.
He was loose with the big chickens yesterday and did beautifully. It just amazed me to watch his instincts take hold.
I'm very serious about his training. If I wasn't, I would be stuck feeding a horse of a dog and getting nothing in return because he would be in my lap.
He is one snuggly guy. It's so hard to have him out there in his crate in the coop. He was crying last night after I put him up. I know he had eaten and drank and gone to the bathroom, so he was just sad. It was all I could do not to go get him and let him sleep on my lap, he really doesn't fit in my lap, but you know what I mean.
I'm in love with the breed now, and only after one day with him. He is an amazing dog.