Unfortunately, there have been many hunting dogs that have lost their lives because of improper training and lack of control. (petfoodtalk.com)
The contractor errors resulted from improper training, failure to monitor and correct repeated mistakes and failure to keep proper records for quality assurance. (nypost.com)
And it can be traced to improper training right from the time the puppy was first brought home. (yourpurebredpuppy.com)