The Trot 'N' Treat  Retrieve Training Bar is a great introduction to training your dog how to hold a strung bar in order to progress to the 'Fall Flat Dumbbell'.  Prepare and teach your dog to 'grip and hold' using the Retrieve Training Bar in order for a smooth transition onto holding a dumbbell.  The Training Bar comes in many colours and importantly can be made to colour match the 'Fall Flat' Dumbbells.