I guess the stamina all depends on the situation and conditions. In my mind if I went for a 10 mile hike or long hard run in the heat and upon returning home a situation would arise that would require for the animal to continue to perform the necessary task to serve and protect . I personally prefer a navy seal of a dog instead of a 250lbs body builder of a dog. The intensity and power is incredible even out of these 80-100 lbs dogs. I have a puppy out of Vlad and lady smith and at 5 months that frequency/ intensity is increasing. Lee is an amazing elite breeder

Amazingly well put together dogs here

Bumper is very nice 👍

Getting that work out of Keaton

American Sentinel K9, LLC, Thank you very much for uploading this video! What a dog! Not only physically, but also temperamentally: No fear, "all bite, no bark!" By the way, I used to think a dog should weigh at least 130 lbs (better 150 lbs) and up (as long as they are athletic and do not drool). However, while I still prefer the heavier dogs, your videos convinced me that lighter dogs can do the job too (it is just that heavier dogs would eliminate the threat from an attacker just by their weight alone, and as long as dogs are just companion and guard dogs, I do not think that excellent stamina is that important). Merry Christmas to you and your family!

Who and where did u learn the principles of protection training

That dog isnt a full bred pitbull is it???? What breed is he ❤