“After four months of entertaining humans, Gaak the predator robot yesterday did what all the best robots do in science fiction: he copied his masters’ most basic instinct and made a dash for freedom.

Programmed to sink a metal fang into smaller but more nimble prey robots, to “eat” their electric power, at a science adventure centre, Gaak showed that a two year experiment in maturing robot “thinking” may be proving alarmingly successful.

Left unattended for 15 minutes, the 2ft metal machine crept along a barrier until it found a gap, squeezed through, navigated across a car park and reached the Magna science centre’s exit by the M1 motorway in Rotherham, South Yorkshire.” Guardian UK