Remember the carnivorous robots? They are fueled by digesting meat. They can ooze through crevices.
They can learn your habits.
http://www.thisiscolossal.com/2013/09/little-robot-friends/
And some can move like snakes.
http://biorobotics.ri.cmu.edu/projects/modsnake/
Now they’re invisible.
http://www.chameleo.net/default.html
[…] a story. Remember the Carnivorous Robot? I’m using it in a story. Current body count: a government agent, a best friend, and a cat. […]