Abstract: The door holder includes a flexlatch, a rigid plate, and a striker plate coupler. The door holder may be adapted to retain a door open at a fixed opening width such that a smaller pet may pass through the open doorway and a larger pet or a small child is prevented from passing through the open doorway. The door holder may couple between a door knob of the door and a striker plate in a door frame by securing the flexlatch around the door knob and by hooking the striker plate coupler onto the striker plate. Spring action of the flexlatch may assure that the striker plate coupler remains coupled to the striker plate. The flexlatch, the rigid plate, and the striker plate coupler may be formed into a single element that may hang from the door knob when not in use.