i semi agree with what toebuster says. i think any dog is capable of what you want as long as you and your trainer are able to train the dog, with patience. i also believe a young started dog is far easier for most than starting with a puppy, that being said, it takes quite a bit of knowledge, and training to get a dog to the level most want, on top of that a puppy at 1 yrs old is not mature enough for real protection work, as he is still just a puppy regardless of size, strength and training. also like i stated before just because you spend whatever amount of money, that training needs to continue. this is simply not a 5 minutes a day thing, and there is no dry firing a dog. most trainers will agree on this, but not much else. trainers are mostly very opinionated and very biased to a certain type of dog.
i generally have titled dogs for breeding and enjoy training them in both schutzhund and other activities. all of my dogs will bite for real and have been tested. the schutzhund titles to me are worthless, it is a piece of paper, a score is also useless to me. i don't measure my johnson by what me and a dog can achieve on a field, with a set routine that it has been proven a dog that cost 25$ from the pound can achieve. like toebuster said it is very useful for bonding with the dog and learning about each other. that being said, i also like ringsport, psa type training, and have access to tools many don't.
I also like to dispell myth's like the '' i can whip a dogs a$$''. put a normal person in a bite suit without gauntlets and such and let them feel what force a malinois hits with on a long bite, the amount of pressure a dog bites with when attacking, and most change their mind.
i'll leave an open invitation to an members in the auburn alabama, or columbus ga , area to come train, see what is involved, learn alittle. drink a beer, have some fun. pm me if interested
any of the other ''dog people'' also feel free to pm me as i will be travelling this summer doing training. possibly in your neck of the wood and i'm always interested in shooting and talking dogs
have a good evening
Kenny