We have a Great Pyrenees livestock guardian dog who we absolutely love. He's super with the kids too. He doesn't challenge fences, but most Great Pyrs do, and you need serious fencing. We adopted him from www.gprnc.org (Great Pyr Rescue of Northern Calif) -- they certify some of their dogs as "family farm dogs", who have been tested with livestock and kids. The rescue org came to our farm twice to look at our needs, advice us on fencing options, and check the final fencing product. I believe their website library also has an article on livestock dogs and chickens -- I think it can be a bit tricky.
We have coyote (ate our sheep), and mountain lions and bobcats (loved our hens), but we haven't lost anyone since adopting our dog. We used to have guardian llamas and, even though they would charge new human visitors, they would ignore the coyotes.
We have coyote (ate our sheep), and mountain lions and bobcats (loved our hens), but we haven't lost anyone since adopting our dog. We used to have guardian llamas and, even though they would charge new human visitors, they would ignore the coyotes.