I have a half Great Pyrenees/half Labrador Retriever and she is an excellent chicken guardian. We have raised her around chickens since she was 6-weeks-old and she is now 10-months-old. When I let our flock of 20 chickens out to free range, she will lie in the grass among them. If they get out of sight, like behind the shed, she'll herd them back closer to the coop. I've never had a lab before and I think the mix with Pyrenees is perfect. She's intelligent and has a soft mouth. She's willing to please and loves to work. Good luck with your puppy search. I found mine on a Facebook sale group.