He""s a dog.He""s an Animagus." [This was the first of three amazing transformations to be revealed in the course of the action.]The dog Grim was actually Sirius Black in disguise - he could turn into a ferocious dog at will.Harry attacked Sirius to save his friends, but Remus Lupin burst in and disarmed Harry with his wand.[The suffix""een""denotes little and is often used affectionately.]They ride under a train bridge after the train pulls out of the station - the 20th century vehicle passes over them as hey enter the lush green countryside of Sean""s past life.But the experience - and everything they know about duty, honor, courage and manhood (expressed in the first act""s ritualistic deer-hunting sequence) - is wrenched apart and shattered in the face of the gruesome war.Hundreds of zombies still mingled outside, walking and stumbling about in a stupor and clawing at the building.