If you are still in the process of choosing a
dog for your family, you have the benefit of being able to choose a
dog who has the
best possible chance of living harmoniously
with children because you can choose a
dog who has the appropriate
temperament, and you can dedicate the time to instill
good manners and sociability from the start.
If on the other hand, your adult
dog has developed some behavior,
temperament or training problems, retraining is still
possible, but it will take much more time than preventative puppy training and, you'll have to use different training techniques (all - or - none reward training) than the lure / reward training techniques that worked so
well with your puppy.