Immensely pleased to feel that he was at last going to understand the mystery of these horses, Harry raised his hand. Hagrid nodded at him.
“Yeah… yeah, I knew you’d be able ter, Harry,” he said seriously. “An’ you too, Neville, eh? An’—”
“Excuse me,” said Malfoy in a sneering voice, “but what exactly are we supposed to be seeing?”
For an answer, Hagrid pointed at the cow carcass on the ground. The whole class stared at it for a few seconds, then several people gasped and Parvati squealed. Harry understood why: bits of flesh stripping themselves away from the bones and vanishing into thin air had to look very odd indeed.
“What’s doing it?” Parvati demanded in a terrified voice, retreating behind the nearest tree. “What’s eating it?”
“Thestrals,” said Hagrid proudly and Hermione gave a soft “Oh!” of comprehension at Harry’s shoulder. “Hogwarts has got a whole herd of ’em in here. Now, who knows—?”
“But they’re really, really unlucky!” interrupted Parvati, looking alarmed. “They’re supposed to bring all sorts of horrible misfortune on people who see them. Professor Trelawney told me once—”
“No, no, no,” said Hagrid, chuckling, “tha’s jus’ superstition, that is, they aren’ unlucky, they’re dead clever an’ useful! Course, this lot don’ get a lot o’ work, it’s mainly jus’ pullin’ the school carriages unless Dumbledore’s takin’ a long journey an’ don’ want ter Apparate—an’ here’s another couple, look—”
Two more horses came quietly out of the trees, one of them passing very close to Parvati, who shivered and pressed herself closer to the tree, saying, “I think I felt something, I think it’s near me!”
“Don’ worry, it won’ hurt yer,” said Hagrid patiently. “Righ’, now, who can tell me why some o’ yeh can see ’em an’ some can’t?”
Hermione raised her hand.
“Go on then,” said Hagrid, beaming at her.
“The only people who can see Thestrals,” she said, “are people who have seen death.”
“Tha’s exactly right,” said Hagrid solemnly, “ten points ter Gryffindor. Now, Thestrals—”
“Hem, hem.”
Professor Umbridge had arrived. She was standing a few feet away from Harry, wearing her green hat and cloak again, her clipboard at the ready. Hagrid, who had never heard Umbridge’s fake cough before, was gazing in some concern at the closest Thestral, evidently under the impression that it had made the sound.
“Hem, hem.”
“Oh, hello!” Hagrid said, smiling, having located the source of the noise.
“You received the note I sent to your cabin this morning?” said Umbridge, in the same loud, slow voice she had used with him earlier, as though she were addressing somebody both foreign and very slow. “Telling you that I would be inspecting your lesson?”
“Oh, yeah,” said Hagrid brightly. “Glad yeh found the place all righ’! Well, as you can see—or, I dunno—can you? We’re doin’ Thestrals today—”
“I’m sorry?” said Professor Umbridge loudly, cupping her hand around her ear and frowning. “What did you say?”