I have the most stubborn Golden Retriever. She, Zoe, Turns 1 years old tomorrow on Valentine’s day. 😉 I’ve tried clicker training, obedience school…even the dog whistle had no effect on her when I thought the whistle was very powerful to a dog’s ear. So, other than those I’ve mentioned, what is the best training device to use now? Those shock collars? Invisibal fence? WHAT!?? lol. I mean, she is the kind of dog that KNOWS what is wrong but does it anyways behind our back and then hides! LMAO. Thanks.