I am 15 and have a 5 1/2 month old yellow lab. I have been training him to be a duck dog. He has the basic sit stay come and fetch down. My problem is that he wont always fetch the dummy, He is usally good for about one throw and wont do much after that. he usally runs out there then sniffs it then runs back to me. I dont know what to do...... HELP.. Also i have been reading alot of different books like 10 minute retriever and Water Dog

thanks
Will