video://www.youtube.com/watch?v=uy7nRjzTYSg
Remember the Automatic Ball Throwing Machine for your dog? Well, get one of these Robotic Dogs and you will have a complete dog throwing/fetching automation. Why not?
This robot uses an Acroname CMUcam2+ for its eye and an Acroname BrainStem GP 2.0 microcontroller for its brain. It chases down a bright pink ball (which I made with a styrofoam ball and neon pink acrylic paint), grabs it with its dual-servo pincher, and brinks it back to its home base by homing in on another bright pink target (conveniently mounted over the iSight camera on my Mac).

Other interesting stuff at Zedomax.com: acroname, acrylic paint, automation, brain, chases, cmucam2, gp, grabs, isight camera, Microcontroller, pincher, pink ball, robotic dog, robotic dogs, Robots, styrofoam ball, target