Sirius Owns Buckbeak

Then, at last, Sirius slipped out of sight, and when they reached the place where he had vanished, they saw a narrow fissure in the rock. They squeezed into it and found themselves in a cool, dimly lit cave. Tethered at the end of it, one end of his rope around a large rock, was Buckbeak the hippogriff. Half gray horse, half giant eagle, Buckbeak’s fierce orange eye flashed at the sight of them. All three of them bowed low to him, and after regarding them imperiously for a moment, Buckbeak bent his scaly front knees and allowed Hermione to rush forward and stroke his feathery neck. Harry, however, was looking at the black dog, which had just turned into his godfather.

Chapter 27-Padfoot Returns