A door frame assembly of an animal enclosure, comprising: a frame including a plurality of interconnected horizontal and vertical wires (204, 206) that define an opening in the frame for allowing access therethrough; a door pivotally and slidably coupled to a first vertical wire of the frame for pivoting the door between an open position and a close position, the door including a plurality of interconnected horizontal and vertical wires (208, 210); and a first coupling mechanism for selectively limiting the door from pivoting about the first vertical wire, the first coupling mechanism formed by a first horizontal wire of the frame, wherein the door frame assembly further comprises a second coupling mechanism for selectively limiting the door from sliding along the first vertical wire, the second coupling mechanism comprising a wire forming a first bend, a second bend, and a third bend, the first bend defining a first portion pivotally coupled to the door and the second bend defining a second portion extending from the first portion and defining a stopper portion, the stopper portion being configured to limit movement of the door relative to the frame along the first vertical wire in a latched position until the second portion is pivoted in a direction toward the door and away from the frame to an unlatched position, wherein, when the second portion is in the unlatched position, the door is slidable about the vertical wire to disengage the first coupling mechanism to permit pivoting the door between the close position and the open position, wherein the third bend defines an end of the wire such that the end is oriented in a direction pointing toward the door in the latched position, and wherein the first horizontal wire of the frame forms a hooked end protruding outward toward the door and spaced inwardly of the frame to intersect with the opening defined by the frame. a frame including a plurality of interconnected horizontal and vertical wires (204, 206) that define an opening in the frame for allowing access therethrough; a door pivotally and slidably coupled to a first vertical wire of the frame for pivoting the door between an open position and a close position, the door including a plurality of interconnected horizontal and vertical wires (208, 210); and a first coupling mechanism for selectively limiting the door from pivoting about the first vertical wire, the first coupling mechanism formed by a first horizontal wire of the frame, wherein the door frame assembly further comprises a second coupling mechanism for selectively limiting the door from sliding along the first vertical wire, the second coupling mechanism comprising a wire forming a first bend, a second bend, and a third bend, the first bend defining a first portion pivotally coupled to the door and the second bend defining a second portion extending from the first portion and defining a stopper portion, the stopper portion being configured to limit movement of the door relative to the frame along the first vertical wire in a latched position until the second portion is pivoted in a direction toward the door and away from the frame to an unlatched position, wherein, when the second portion is in the unlatched position, the door is slidable about the vertical wire to disengage the first coupling mechanism to permit pivoting the door between the close position and the open position, wherein the third bend defines an end of the wire such that the end is oriented in a direction pointing toward the door in the latched position, and wherein the first horizontal wire of the frame forms a hooked end protruding outward toward the door and spaced inwardly of the frame to intersect with the opening defined by the frame.