Hey you guys,
Thanks very much for the responses, some of which I laughed at.

HOWEVER no-one has commented on the age issue. Yuriy is only 8 weeks old. Previously, when I had Labradors before they ate anything!

Do you think 8 weeks is too early. The thing is that he is really doing very well in potty training without anything as a treat. Love the popcorn idea. I can make my own without sugar/saly.
Love to hear from anyone on the age thing.