This TrotBot was created by Ben Vagle. It is an 8-legged robot built out of LEGO Mindstorms and despite its looks, it uses a walking mechanism inspired by the gait of a galloping horse.
You can see it in action in the videos below.
Some farmers are already using drones to monitor their crops, but researchers from Georgia Tech think they have a better solution. They have created a robot inspired by the sloth and named it Tarzan, after the way he swings from vine to vine.
Most drones are a variant on a multi-rotored helicopter. The quad-rotors are the most common, but professional photographers like the octo-rotors more. Still, there are a lot of other ways to beat the air into submission and fly, including the good old standby of be light, have wings, and flap them a lot.