Ludicrously strong—when it butts heads with a mountain, it is the mountain that shatters. But its short legs struggle with turns, and it is incapable of stopping unless it collides with something.
RHYHORN runs in a straight line, smashing everything in its path. It is not bothered even if it rushes headlong into a block of steel. This POKéMON may feel some pain from the collision the next day, however.