Oscar is six months old and used to retrieve pretty enthusiastically but lately he just either runs towads the object slowly, gets there, picks it up then puts it down and starts sniffing at somnething else, or he will just run towards it and then just go off in a different direction. Any idea how i can get him interested in it again? Ideally, I'd like to work him so this is quite an issue! This is not guaranteed to happen all the time but its 50/50 at the moment. When he does return to me, I give him lots of praise and he gets a reward once he has finished.