I'm suprised that nobody has mentioned that the labradoodle was originally bred in South Aftrica for use as a guide dog for the blind.
At least that's what I have been told by a marvelous English dog trainer who spent a lot of time there. Lionel trained guide dogs, police & army dogs as well as just plain pets. He was truely wonderful with all sorts of dogs. He trained us to train our first standard poodle.
Anyway the idea was to combine the intelligence of the poodle with the personality of the labrador to make an ideal guide dog.
Seemed to work in South Africa.