Not that I've formally thought it out, but I have trained the cats to come running when I want them. Even Allen (who does what he darn well pleases in his own sweet time) comes running now. This has saved my sanity many times over when the doors have been left open by accident (images of my guys out in the neighborhood terrify me). Now I'm wondering if I should stahs harnesses in my glovebox in case I DO have to run out fast with the cats. Nicki of course, like you said, is easy. Just leash her and go.