Explosives Robot 'MoonBuggy'

Smith Engineering's Moonbuggy unmanned ground vehicle is an 1800 pound, six-wheeled vehicle that can be controlled via radio or an umbilical. It runs at up to 12 kph with a 33 hp diesel engine.

It can be decked out with various scoops and shovels on the front and back.
It includes 4-camera front and rear view with pan and tilt.

In the configuration shown in this picture it looks like it would also be a perfect alternative for cleaning the cat box.