  Harry gently stroked Onyx who was curled up on his lap. Hedwig was flying high above them, hunting field mice that seemed to live near them. Harry had been extremely angry when he learned that Hedwig could also be brought out of the Owl Tower, that was Harry's personal name for it, and had sent Tripping and Stinging Hexes at the Slytheirn Prefects. He'd even charmed their shoes to dance at certain words or made their fingers feel like jelly. Harry was very vindictive.