Plenty of evidence suggests there have been pole shifts on Mars, Mercury, Venus, Earth’s moon, and moons of Jupiter and Saturn like Europa and Enceladus. The cause is often a large accumulation of ice at one of the poles. If the ice mass isn’t perfectly centered on the axis of rotation, it puts torque on the crust and the extra mass pushes towards the equator. Eventually, resistance is overcome and the entire crust moves in one solid piece into a new position around the entire globe – a pole shift.
Books like Pole Shift: Evidence Will Not Be Silenced explain the evidence for such events on Earth. The video below describes evidence of pole shifts on other worlds.