outsmarted by my dog...again!

I was working on teaching my two bitches to jump over a broom stick (well, a broom stick was just what I happened to have nearby). The young one found it to be incredibly funny. I started out with the broom on the floor, clicked her for walking over it. Put it on two low chairs, clicked for jumping, attached cue. Then up on ordinary kitchen chairs, click for jumping on cue. Then I tried something I have been wanting to do since the situation described in an earlier blog, where she jumped on cue, but in front of, not over an obstacle. I put the broom back on the ground, and cued jump. Yes! she jumped high up and over, I moved the broom away, and had her jumping, in that perfect "jumping horse" style all over the room, and with nothing to jump over. Hilarious. Beautiful! We ended with a scattered handful of treats.

I knew my older (4½ years old) bitch would never do that, she thinks the whole jump over thing is silly to do indoors. She knows the cue, and will gladly jump a fence when I ask her to outside (when hunting e.g.). But indoors, it's obvious that she only does it because of the treats...

Anyway it would be a nice shaping experiment. COuld I get her to jump with out using any cues or body language?

Broom on floor. Dog in room. C/t for approaching broom. c/t for leg over broom...etc. when she was walking back and fort over the broom I put it on the kitchen chairs. She walked up to it. looked at it. Then hooked a paw over it, pulled it off the chair, then walked across it, and turned around looking  for her treat. She got a handful and we ended the session, as I was laughing too hard to focus....