Problem seems to be, what is meant by control? Two dogs growling, barking, biting over turf may not be acceptable to some people. To me, that kind of behavior is normal dog stuff and not a threat to humans or the life of the animals involved.
The difference with some dogs (sometimes referred to as "vicious dogs")is the aggressive nature of their attacks and the willingness to kill. That is what moves their potential for harm into the loss of other animals and possibly human beings.
I'm no dog authority, but Danes wouldn't be my first choice to have around children. Danes are a hunting dog bred to take down prey. I don't think they have the attributes of pitbulls which -- let's face it -- were bred to kill. I knew a St. Bernard once who was the most docile loving animal you'd ever want to see. It isn't just the size, it's the nature of the breed and that is not the fault of the animal. Human beings breed them for certain purposes.
IMO, actually, control is NOT a problem. There is a definite control that would work for all dogs. Leashes and fences that hold. Any dog, at any time could bite, human or other animals. As you say, that is just the nature of dogs. Taking someone's word for it that a certain dog will never bite is stupid.
Becky
My pits are not allowed to show any aggression, even a grunt. They are not the determiner of turf. That is the owner's(me) role as the leader of the pack.
In turn, I do not allow other dogs to be aggressive near my dogs. Any time a foreign dog growls for turf, I step to the challenge as the pack leader.
Despite all of the dialog about how to be a responsible pet owner, you should not allow your dog to roam free. There are way too many things you cannot control that can injure or kill your dog.
keep in mind that poodles are also bred as a hunting dog.
If fact, nearly all dogs were bred as hunting dogs.