This is well worth doing for every dog owner who is interested in being able to recognise and help their dog overcome issues.
The best part is that you can incorporate it into your everyday routine,
you don’t need any special equipment and the dogs adore it and show the results very quickly.
So go on give both you and your dog a real long lasting treat. 
Several people from DID have done this course and all really borh enjoyed and benefited from it.