Well, you'd say, obviously!
Disclaimer: I own a Pleo.
I know that it's not engaging as it could be a cat, but it can be engaging as it could be -say- a turtle.
Of course this is just an attempt at AI, with some life simulation; so there's nothing like neural-network-simulated-synapses-AI-supercomputer-MIT-experiment, you know.
What's nice is that there have been a couple firmware upgrades, with actually different 'global' behaviours, and there are a few 'SD' behaviours that can change the way Pleo reacts to external activities.
All in all, it is nice to have the thing moving around in the explore mode, and toy with it and make it purr or barf or stand on two legs
Ah, by the way, a link
may be nice