I am also having similar problems have a 7 month old male, who is perfect at recall in the house, garden and at training class, but once outside at the beach or park, he suddenly forgets you exist, and loses his hearing. He does not respond to toys, or smelly food (liver cake yum!) or even when you hide, he doesnt even notice your gone (though owners of other dogs certainly do notice you have high tailed it away from him.) can anyone help!!