Fawkes is a phoenix, Harry. Phoenixes burst into flame when it is time for them to die and are reborn from the ashes.

What's that?" he snarled, staring at the envelope Harry was still clutching in his hand. "If it's another form for me to sign, you've got another -" "It's not," said Harry cheerfully. "It's a letter from my godfather." "Godfather?" sputtered Uncle Vernon. "You haven't got a godfather!" "Yes, I have," said Harry brightly. "He was my mum and dad's best friend. He's a convicted murderer, but he's broken out of wizard prison and he's on the run. He likes to keep in touch with me, though...keep up with my news...check if I'm happy.

Thing was' he faced them, and Harry was astonished to see that he was grinning, 'they bit of a bit more than they could chew with Gran. Little old witch living alone, they probably think they didn't need to send anyone particularly powerful. Anyway' Neville laughed, 'Dawlish is still in St Mungo's and Gran is on the run. She sent me a letter,' he clapped a hand to the breast pocket of his robes, 'telling me she was proud of me, that I'm my parents' son, and to keep it up

I bet you’re not dangerous at all, are you? Are you, you great ugly brute?

Books can be misleading...

In March several of the Mandrakes threw a loud and raucous party in greenhouse three. This made Professor Sprout very happy. “The moment they start trying to move into each other’s pots, we’ll know they’re fully mature,” she told Harry.

Both could feel the relationship crumbling to pieces beneath the weight of everything that Gavin refused to say.