"S'not too bad. Nothin' Dumbledore won' be able to put righ' . . ."
-- Hagrid, unaware that Dumbledore was dead (HBP28)
When Hagrid joins the fight against the fleeing Death Eaters, Thorfinn Rowle fires off an Incendio spell that ignites the gamekeeper’s wooden house. Hagrid angrily shouts that Fang was trapped in the house, and he ran into the flaming house to rescue the dog while Buckbeak attacked the fleeing Potions Master. When the Death Eaters and Snape had escaped, Harry and Hagrid together cast Aguamenti spells to put out the fire.