What are the best flock guardian dogs?

Santi Rod: What are the best flock guardian dogs that will protect its owner its family and its flock with its life?
Below is a list of the canidates which ones would be the best well thank you.

Photo Credit: Jon Díez Supat/Flickr CC
Akbash Dog
Anatolian Pyrenees
Anatolian Shepherd
Austrian Shorthaired Pinscher
Bukovina Sheepdog
Bulgarian Shepherd Dog
Cao de Castro
Laboreiro
Cao da Serra da Estrela
Cao da Serra de Aires
Carpathian Sheepdog
Caucasian Ovtcharka
Central Asian Ovtcharka
Chien De L' Atlas
Estrela Mountain Dog
Great Pyrenees
Hellenikos Poimenikos
Kangal Dog
Karst Sheepdog
Komondor
Kuvasz
Maremma Sheepdog
Mioritic Sheepdog
Owczarek Podhalanski
Perro de Pastor Mallorquin
Pyrenean Mastiff
Rafeiro do Alentejo
Sarplaninac
Slovensky Cuvac
South Russian Owtcharka
Spanish Mastiff
Tornjak

Answer by Lexi
actually the two dogs that are the top breeds known to protect, love, respect, and fight for there humans are:
the american pitbull terrier<3
and the gorgous karelian bear dog.
both can withstand pain, and will fight till the death to keep there pack safe.

Answer by Liana
the great pyrenees is what i would go for they are very loyal.! they protect the land they live on, their family, and the other animals that they live with. but i would narrow your list down and research the ones that are left and go from there.

Answer by Nedra E
What is this?
Are you doing a survey or a school paper?
If you are actually trying to select an LGD, you wouldn't have posted a list of all the LGD breeds you could find.
There is not ONE BEST LGD breed.
A lot of what's best depends on the owner and the owner's needs and the owner's personality.

Keep in mind that which dog is "the best" depends on several factors.
Where will the dogs be (what state / country)?
What will the dogs ACTUALLY be guarding?

My personal preferences are the Great Pyrenees and the Komondor.
The Akbash, Anatolian and Kuvasz are more likely to attack a predator than other breeds in the list.

The Great Pyrenees and Komondor are more likely to guard by intimidation, by barking and inserting themselves between the livestock or family (pack) member for protection than attacking. They use attack last in their arsenal of methods, and intimidation first.

Noone here knows ALL those breeds.
The dogs that are called Sheepdogs you should see if they are in the herding group or the working group. Herding breeds tend to work better with a handler. Working dogs were bred more to make independent decisions so the shepherd could sleep at night, so they are more challenging to train.
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