But, actually, he chose a stag because it was large, powerful, and fast. It could survive a werewolf attack (assuming the worst case scenario happened). When the Marauders told Remus they were animagi.
I'm a Pureblood. (And proud of it!) My mom's a Squib. My dad's a Squib. My little sisters a Muggle-Born. My older brother is a Dursley. Most of my friends are Dursley. That is why i am such a Deatheater when i talk to them. I am weird.
Draco ripped out a piece of paper from an unknown book in the beginning of Chamber of Secrets. Hermione had a ripped out piece of paper talking about the Basilisk in the movie. Not sure I agree, but it's food for thought!