The CSA's Rex rover has a robotic arm that simulates collecting Martian rock and soil samples. It travels at 4cm/sec (1.57inch/sec). On its six aluminum or rubber wheels, the rover can navigate over obstacles up to 15cm (5.9 inches) high and climb slopes of up to 10 degrees. Rex weighs 140kg (308.64 pounds) and measures 152 x 142 x 76cm (59.84 x 55.9 x 29.92 inches). It can carry up to 30kg (66.13 pounds) of science payloads. In 2010, the CSA jointly field tested the rover with NASA at the Flagstaff Meteor Crater in Arizona. (Source: Canadian Space Agency)
Ann, this is interesting, but does the CSA plan to deploy these. I recently saw a show on PBS which went into some detaill about the Curiosity rover. This is a large vehicle. One thing that was interesting was the Mars Exploration Science Rover. Your caption states that the rover is designed to collect samples to bring back to earth. As far as I know, this is a very expensive proposition. The Curiosity rover has the lab built in so that it can analyze the samples in place.