Sirius bids farewell to Harry in Animagus form

As the Hogwarts Express departs, Sirius, still in his dog form, runs alongside the train, wagging his tail and amusing onlookers. Mrs. Weasley quickly ushers Harry onto the train, and Ron and Hermione wave goodbye from the window. Harry feels mixed emotions as the train leaves the station, concerned about the risks Sirius took in accompanying them.