try to get the dog more intrested in the dummy by teaseing it, make it try and get the dummy from youre hand, do this for a minute or 2? and when you do throw the dummy, do so in a small narrow place i.e, hall way? somewhere so he cant run away with it, the only place he can go is to you, you dont have to throw it to far, just aslong has he/she brings it back to you, if he doesnt show any intrest, keep teaseing him with it, its a game to the dog thats all, and when he does retrieve, praise him and give him a reward, i.e biscuit? if he gets bored after a while. STOP IT, and leave it and try ag