Kikiriki
Songster
You may want to consider getting a livestock guardian dog if your goal is to keep free ranging. Ideally, they are raised with their parents on a farm. Some breeds do not mature until 3 years old and before that they can be immature teenagers who want to play with the animals or are inattentative/easily distracted. Just because a dog is the right breed does not mean they have been acclimated to the job they will have.
I got lucky that my own adopted dog turned out to be an LGD, as it was not why we adopted him. It is easy to test how a dog will do, though: when they are not trustworthy, they alert on the animal, focus hard and fast on the animal, have muscle tension, and spring towards them as if they are prey. The LGD dog does not do any of these, but rather is calm, relaxed, and shows no prey instinct. The dog I have took down a hawk on the wing as it went after chickens and rabbits. The dog was not trained to do that, and heck if I know how he knew the hawk was a predator!
Note that LGDs are not the same as herding dogs. Herding dogs make eye contact with the animals, while LGDs do not. Also, a good shepherding dog will be alert and tense, but is more focused on the owner awaiting instruction to go do the job.
I got lucky that my own adopted dog turned out to be an LGD, as it was not why we adopted him. It is easy to test how a dog will do, though: when they are not trustworthy, they alert on the animal, focus hard and fast on the animal, have muscle tension, and spring towards them as if they are prey. The LGD dog does not do any of these, but rather is calm, relaxed, and shows no prey instinct. The dog I have took down a hawk on the wing as it went after chickens and rabbits. The dog was not trained to do that, and heck if I know how he knew the hawk was a predator!
Note that LGDs are not the same as herding dogs. Herding dogs make eye contact with the animals, while LGDs do not. Also, a good shepherding dog will be alert and tense, but is more focused on the owner awaiting instruction to go do the job.