The dogo argentino will not do well in extreme cold.
Pyrenees are flock guardians while border collies are herding dogs. Big difference. One was bred to protect the herd from predators (wolves etc) the other to help move them around.
The traits that make malinois suited for service also make them horrible pets. They NEED an intellectually and physically challenging job. If you don't provide it they will turn all that energy and intelligence to destructive pursuits.
I picked up a Black Mouth Cur and he is awesome. Couldn't think of a better wilderness or survival dog. Protective, highly intelligent, strong, athletic but agile, and a good hunter but an off the scale tracker. He is obedience trained off leash. He will not run away because his protect the pack at all costs will not allow him to get out of sight unless commanded to do so by the pack alpha- me!
His protection, sensory skills, and night time monitoring while I sleep out weigh any additional loss of food liability. Besides his tracking and hunting skills will just yield us higher returns than those without this asset.
Just make sure it's one with enough meat on it to keep you going.
BINGO!In a short term scenario most dogs are going to be equally useless. A big dog might get the nod though since there is more to eat on them big bones.