Pirobot can track and capture balls

Pirobot is a robot prototype which can focus on a ball of a specific color until it gets it and then concentrates on a second ball. In the video below, Pirobot only sees the green ball; it follows it with its eyes (with its camera) until it can finally hold it in its hands. Immediately afterwards, it concentrates on the red ball and starts tracking it. Unfortunately for Pirobot, it cannot carry both at the same time. It's made to release the green one and straight away refocuses on it, ignoring the red one. This is very similar to animal behavior, for example dogs who are presented with two balls at the same time. http://www.youtube.com/watch?v=319eVBIYfec