I read an article on Pleo, the new robotic dinosaur that can be purchased for $349.00. It can "play tricks, roam the house, sleep when bored and tug on a fake leaf to simulate hunger." (I wonder how it knows when it is bored.)
We have probably all felt attachment to an animated figure in a movie, and most of us are attached to a great deal of inanimate objects, and yet, I must say I can't imagine replacing Tiger and Bella with Pleo. On the other hand, it would be cheaper and easier, and, .... I think their presence in this house is safe and secure. I won't hide the article from their eyes.