I posted the previous post as a bit of a joke.
I do not think it is unreasonable to have a protective dog that is good with the kids even though they are only around every other weekend.
It WILL take some work and socialization but it can be reality. You want a natural guardian. Not a dog with attack or bite work training. A good middle of the road GSD puppy would not be a bad choice. An ACD might not make a bad choice if you can handle the work ethic. In fact an ACD might match up well with the boxers energy wise. Although I think the average ACD might be in high energy mode long after the boxers are worn down. All in all, I think the GSD would be the easier dog to live with. But A BUNCH of the herding breeds sort of fall into this catagory.
Both of our dogs fit pretty well into a natural guardian role. Buc the Lab Mix tends to be very lab like but he has a little more fire in his belly than most Labs. I remain unsure what he is mixed with. He seems mostly Lab to me but there is something else there. Merlin the ACD is even more so a natural guardian. And in typical ACD fashion, he would stand off a herd of grizzly bears if they tried to come through the front door.
My wife and I do not have kids. But we have nieces and nephews that stay here often for short periods of time. We have friends over often. Many times with children. Our dogs are part of our lives and are never scooted away when others are over. (in fact if the one pair of nieces stay, Buc (the big black Lab mix) usually sleeps at the doorway of the guest bedroom or even in the room if they leave the door open. My ACD invariably sleeps near the foot of the bed on my side. Because I am the greatest human on earth (At least in his eyes) Both dogs do well with guests. play nicely with children (with supervision because if the dog is asked to be polite the child must be polite as well) and welcome everyone we bring into our home. But I can assure you that if someone tried crawling through a window at two am, it would not be pretty. Those two same dogs walk down the street and greet people we meet and like to be petted. But are cautious if I am walking one of them late at night at a time when most folks are long since retired for the evening ( I am a bit of an insomniac and often go for late night walks) and a stranger approaches.
But all this takes WORK and lots of it. As I mentioned our dogs are part of our lives. They go all over with us. Merlin competes in conformation and will compete in herding. He HAS to be comfortable around strangers.
The way this works is this.....
1) Socialization - and lots of it. If starting with a puppy, I do what I call 100/100/100. The goal here is to have the dog meet 100 new people/ go 100 new places all within one hundred days. You want the people to be friendly and the experience to be positive. Its easy with a puppy because almost everyone will readily approach a puppy. With an adult dog, you have to guage where the dog is and work from there.
2) I am a firm believer in NILIF. My dogs live it from day one and then every day of their lives.
3) GOOD obedience traning. If you are dog savvy you can do it yourself. If you are less dog savvy take classes. But do not stop with a basic obedience class. You want to work hard at it (have fun but work at it) You want to get to where the dog has all its commands down well, works equally well off lead as on, remains focused on you, and PROOF, PROOF, PROOF. Training is a lifelong committment with a dog. It starts the day the dog comes home and ends the day the dog passes on.
4) More socialization - Never lock your dog away. Use new situations as training opportunities. One of the biggest reason that dogs become anti social is because they get locked away when guests come over. Instead of locking them away, use guests as training opportunities. Its best if you can get your closer friends to be the training aides.
In my life I have had a laundry list of dogs. Two Catahoula's, a couple of Pit Bulls, a Collie, Various Mixes, a Rottweiler, two ACD's (Merlin is my second and I do not see myself without an ACD again) and the Lab Mix Buc. All have basically followed the above principles. My grandfather said something to me many years ago. I have always taken it to heard. The comment came up when I as a child I was with him and we saw a bull mastiff type dog behind a fence acting very aggressive. I made a comment that I wanted a dog like that. His response..... The biggest toughest dog can never help you if it has to stay locked up.
Four times in my life, dogs have helped defuse potentially bad situations.
Bronson the Rottweiler helped a couple of guys decide they did not want to start trouble with me out in public. I was blocked in by them and could not drive out of the situation. Mostly he just looked at them. But heck he was a Rottweiler and it didn't take more than that.
Doc my second Catahoula ran a guy that jimmied my front door up a tree in the front yard at the house I owned at the time.
Bandit my previous ACD convinced a guy that was trying to break into my sliding glass door at this house, that he might be better to try somewhere else. The cops got him behind the neighbors house.
And Catcher my first Catahoula and Laddie my collie got the Santa Gertrudis Bull that was doing a hat dance on me, off of me. I was hurt but it could have been much worse.