Abstract: A window covering system includes a window blind and a pet curtain. The window blind has an upper region and a lower region. The upper region is coupled to a window frame such that the window blind hangs from the window frame. The pet curtain is coupled to the window blind and extends downwardly past a lower region of the window blind towards a lower portion of the window frame. At least a portion of a dog or cat can move past the pet curtain of the window system to view out of the window without raising the window blinds. The pet curtain includes pass-through features that allow the pet to pass therethrough and that can move back into position after the pet has passed therethrough to substantially cover the window frame or that can be removed from the curtain or reattached to the curtain.