We have a relentless golden retriever. She was around chickens and chicks since she was 6 weeks old. She pounced them then and she pounces or will pounce them now.
My niece has a golden lab that doesn't chase anything. Her dog is self confident and secure though too. My dog is very insecure...
My Aunt told me to tie a dead chicken around my dogs neck for three days and the dog will never mess with chickens again. I have a golden retriever that will not leave my chickens alone. Everything else has failed and it can't hurt. (golden retriever)