Grant, who recently left Solarbotics and landed the job of a lifetime working for WowWee Robotics in Hong Kong, posted a great photo of the 'RaptorPet' on his BEAM page.
Grant does mention that the RaptorPet was "... just some late friday afternoon tomfoolery", but who really knows for sure. I can't imagine what it must be like to work with Mark Tilden - stressful, of course, but really exciting and cutting edge at the same time. Now that the WowWee/Segway alliance has been officially announced the pressure to come up with next years successor to the Robosapien throne must be unbelievable.
By the way, in addition to checking out the RaptorPet on Grant's site, be sure to take a look at some of the projects he's documented on the site as well - everything from mini-sumo bots to pendulums and photovores. It's a really interesting online resource that will trigger new ideas.