Labradoodle is not a breed, it's a cross. Responsible breeders do not breed labradoodles with one another. It defeats the purpose of the cross.

The idea that all dogs are equally dangerous is fatuous self-deception. Dog breeds were bred for certain qualities (running constantly, for certain breeds of sheep dogs; sitting still for long periods of time for duck dogs, to give two examples), and some combinations of qualities make dogs more or less dangerous.