SKYNET SMILES: How killer robot dogs could become weapons of mass destruction.

Of all the inventions in the dystopian sci-fi series Black Mirror, perhaps none is more terrifying than the robotic guard dogs in Metalhead. In the episode, from the fourth series of the programme in 2017, Maxine Peake plays Bella, a woman who, along with two companions, breaks into a remote warehouse to look for medicine. Instead, she finds an autonomous “dog”, armed with a shotgun, knives and shrapnel sprays. It quickly kills both of her colleagues and chases Bella over the moorland with ruthless single-mindedness. The film is a chilling vision of machines programmed to do one thing only. The dog does not think or feel; it just kills.

Such machines are no longer fantasy. Last month, it was disclosed that United States Marines special operators were testing robotic dogs armed with guns based on sentry automatic machine guns. Robotic quadrupeds have become increasingly common across the US military in recent years, for everything from bomb disposal to perimeter patrols, but arming them is a newer development.

Not to be outdone, three weeks later, the Chinese military released a YouTube video showing its own four-legged robot, armed with an assault rifle, working alongside its soldiers on exercises. “It can serve as a new member in our urban combat operations,” one soldier says in the video, while the footage shows the rifle firing off bursts, “replacing our members to conduct reconnaissance and identify [the] enemy, and strike the target.” The film makes it clear why such a robot might be useful, able to run into dangerous situations ahead of human soldiers. In another video, an army of similar machines does press-ups in sync.

That’s not creepy at all: