A gift from Draco's father.

I came to Hagrid from a distant land in the pocket of a traveler.

A bezoar is a stone taken from the stomach of a goat and it will save you from most poisons.

Each pack's got a famous witch or wizard. I've got about 500 meself.

I knew you were a danger to me right from the off. Especially after Halloween.

And a thirst to prove yourself.

- I'm a what? - You can talk to snakes.

It's just, I've never talked to a snake before.

...but this isn't a great time for me to have a house-elf in my bedroom.

Fred gave me a spell as to turn him yellow. Want to see?

I took a Bludger to the head two minutes in.

And I have a few last-minute points to award.

Clearly, Hermione knows. Seems a pity not to ask her.

Finally, it takes a great deal of bravery to stand up to your enemies...

I'd guess you have little more than a minute to live.

All students will be escorted to each lesson by a teacher.

...and a stranger turns up who just happens to have one?

An Animagus is a wizard who elects to turn into an animal.

It is not in the nature of a dementor to be forgiving.

It's just a thought. I can understand if you don't want to.