What I do is when Connor jumps up I step into him. I then become something he doesn't want. Also, make it VERY tempting to jump up, I hold my hands above my head and say in a high pitchy voice " O good boy! What a good boy!!" (Don't say his name!!). Then I wait untill he sits,. because eventually he will!! And I pet him. If he stands up out of the sit I stand up and put my hands behind my back and stare at the floor right in front of my feet. He eventully will sit again and I will praise him untill he stands up then I stop and put my hands behind my back and stare at the floor in front of my feet again. I continue this for awile. I also do it for days. Eventually they will learn to sit no matter what situation they are in.

This has worked for all 3 of my dogs

Ashley