It may be a challenge for many pet owners to contain a high energy dog in the yard. The dog is naturally interested, often distractible and tends to chase everything that interests him. That is why it is always intriguing to observe the dog become aware of an invisible border. The instance of the Galileo inna is a good illustration of a boundary system provided you have the necessary technology and proper training procedures. The dog’s response to the Halo Collar boundary cue