A pocket door system for inhibiting an animal from passing through a doorway includes a door frame is positioned within a wall. A door unit is slidably positioned within the wall. The door unit is biased into a closed position having the door unit extending across the door frame. Thus, the door unit may inhibit an animal from passing through the door frame. The door unit is selectively urged into an open position. Thus, the door unit facilitates the animal to pass through the door frame.