Just a couple of vids of me playing/training my dog. He's quite steady and will sit and watch young rabbits as they walk past. With other dogs he gets a bit excited and starts twitching to get at them which gets the better of him at times. He'll sit and stay when I leave the room and comes and sits to the whistle/hand signal so we're getting there. It seems to be as much about training yourself to be consistent with your demands/rewards as training the dog.