A locking assembly for securing and retaining a cage to a rack. The locking assembly is supported by a rack and includes a lock member. The lock member includes an obstruction member. The lock member is movable from an unlocked position to a locked position, wherein the default position of the lock member is the locked position. The lock member is designed and constructed such that the insertion of a person's hand into the hand space between the lock member and a cage is sufficient to cause the lock member to pivot into the unlocked position and move the obstruction member so that the cage can be removed from the rack.