Last night I tried some more animal introductions.
I put Bonnie on a leash and took her to the basement. JJ came to greet me, but on seeing Bonnie, she retreated to her chair - but did not flee in panic. I let Bonnie up to the entrance to the pen and JJ gave a little hiss, but stayed in place. I grabbed a can of food, went into the pen and shut the door, leaving Bonnie on the outside. Bonnie stuck her nose through the wire mesh and starting whining to be let in. JJ sat in my lap and purred. I filled the bowl with food. Bonnie left to explore, and JJ got down to eat, but Bonnie returned, and JJ noticed that the bowl was just a few inches from Bonnie's nose, so he retreated back to my lap.
Hardly a budding friendship - but no barking or growling on the canine side, and no back arching and hiss-spitting on the feline side.
der Brucer