Abstract: An animal passageway configured to facilitate egress and ingress to a building includes a bottom surface extending between a first end and a second end. The passageway is mounted with the building and the bottom surface is disposed a predetermined distance from a ground surface including a floor level within the building and/or a ground level adjacent the building. The first end defines a first opening including a first door and the second end defines a second opening including a second door. The bottom surface defines a third opening including a third door adjacent to the first end and a fourth opening including a fourth door adjacent to the second end. The third door and the second door are configured to facilitate egress, and the fourth door and the first door are configured to facilitate ingress, whereby movement of one of the doors to an open position is asynchronous with the remaining doors.