RHex can scurry ahead of its lumbering big brother BigDog and relay front and rear video up back to their common masters up to 600 meters away. Not only can six-clawed RHex tear it up on all kinds of rough terrain like rock fields, sand, and railroad tracks, manufacturer Boston Dynamics states that its sealed body actually allows it to "swim on the surface or dive underwater". Although clearly aimed at military customers, BD casually suggests that you "drop us an email for information on getting your own RHex."