Kangal Great Pyrenees.
This is a prelminary observation from our first litter of puppies crossed between the two breeds.
First some background on the "guardian" habits of the two.
The Great Pyrenees hail from protecting livestock on mountains and in forests etc. The threat to the livestock can come immediately from a predator attacking from beside a bush, behind a tree or from the weeds and grass. Due to this the Great Pyrenees tends to protect a territory and will expand the territory farther and farther over time so as to make sure there are no predators around to surprise his flock/herd and take out a member. I've noticed when I take my Bubba out and bring him home after a day on the town he immediately prowls the outer limits of his 10 acre enclosure to make sure no predators have arrived. If he could extend past the 10 acres then he would. Another interesting aspect of Bubba is if a hawk flies over his 10 acres he immediately notices it and will run under the hawk, barking until the hawk has departed the airspace. This is totally instinctive and somewhow he can distinguish between non predatory birds versus predatory birds or so it seems. In the natural environment the greater danger from predators seems to be at night and the Great Pyrenees tends to be more active at night.
The Kangal hails from Turkey and places itself inside the herd, often in the center and becomes part of the herd. The kangal in it's native environment can see across the plain the pending arrival of predators such as wolves etc. and will move from inside the herd to outside the herd to get between the predator and the herd. Generally one growl, which is unbelieveably intimidating, and if the predator continues toward the herd the Kangal will start the attack. Generally in a true protection mode there are several Kangals for the herd and not one due to the large area to protect and also the attacks often come from a pack, and not a single animal.
Our first litter produced 10 puppies, 2 stillborn and 8 live. We had two females and 6 males. The mother was a Great Pyrenees weighing 85 pounds and the father, Zeke, weight in at 145 pounds. Both dogs were about 18 months old. The breeding was actually an accident as the female found a way out from her caged area. The biggest physical difference was the brown fur of the puppies and some of the brown was also present in the general pattern of "spots" you see in a Great Pyrenees except darker. The puppies are now 4 months old and we have 2 left.