People have used livestock guardian dogs to protect livestock for over three thousand years. There are a variety of breeds to choose from all with different attributes that make them desirable for this important work. The most well-known of these breeds in the United States are the Great Pyrenees, Anatolian Shepherd, Akbash and Maremma. Many also work as family and home guardians, and several are assistance dogs to their disabled owners as they are sturdy enough to provide physical support. They are generally aloof toward strangers and their size alone is rather intimidating. Though strong, independent-minded and protective, they are normally gentle with children and livestock alike.
Before purchasing a dog for this type of work take the time to learn about the different breeds. Only then can you make an informed choice about which breed is is right for you.
LGDs are not for everyone. Owning one requires that you commit time and effort to their training so they can reach their full potential.
There are a number of things to consider when using dogs to protect your alpacas (or your sheep, goats, horses, etc). For example, the breeder you select is paramount. The temperament of the dogs is also critical - after all, they are supposed to protect your animals, but you do not want to worry about them becoming a liability.