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Not sure if the letters actually stand for anything but GUPI is a robot guinea pig made to look and feel like the real thing. Sensors let GUPI walk around without ever bumping into anything, and he's programmed to respond to affection: ignoring him makes me hide away as do very loud noises, whereas petting him makes him happy and more likely to walk to you when he's called. You can even recharge GUPI's batteries by offering him a little carrot. If you get more than one GUPI in the same area they become excited and interact with each other. At £39.99 each, they're certainly no Aibo in price or smarts, but they might be fun if you want a Tamagotchi-type toy to interact with in real lie.

Gupi Robot Intelligent Guinea Pig []
gupi | robotised guinea pig [swissmiss]
Google Groups: All About GUPI