This paper reports the progress on an extensive inter-disciplinary exercise, namely building a self-sufficient robot, that can catch slugs and obtain energy from them. This project involves engineering design and manufacture of the robot, including its propulsion, slug-catching and navigation mechanisms; the development of behavioural strategies for optimal deployment of time and energy; the development of a digester, capable of breaking down slugs into a usable chemical medium; and the development of fuel cells for extracting electrical energy from this medium.