The invention provides an unmanned wheeled vehicle (1) for transporting litter material (200) to or within an accommodation for an animal with a container (4) to hold a quantity of litter material (200) and a dispensing opening (5) to dispense litter material (200) from the container (4).The container (4) has a filling opening (6) and a filling opening cover (9) which is movable between a closed position, in which the filling opening (6) is covered by the filling opening cover (9) and an open position, in which the filling opening (6) is, at least partially, not covered by the filling opening cover (9) to allow the container (4) to be filled with litter material (200).The container (4) further has a element (8) movably arranged in the container (4) and configured to push litter material (200) towards the dispensing opening (5), and wherein the filling opening cover (9) is configured to be moved from the closed position to the open position by a movement of the pusher element (8).
