I started giving Waffle, my GCC, a walnut for climbing up the playstand. Now s/he climbs up and sits waiting for the walnut. (picture for reference) I trained the behavior I wanted, but I don't want Waffle to keep tricking me into giving walnuts. I am now using the walnut as a target to get Waffle to do a few more laps up and down, but have I pretty much trained the behavior? And what happens if I don't give a walnut?