User blog comment:JoePlay/Harry Potter and the Deathly Hallows - Part 2 Giveaway/@comment-4167413-20110719020353

If I had a Patronus, it would be a White Tiger. White Tigers have their coloration (or lack thereof I guess you could say) because they possess 2 recessive genes that determine fur color. Generally, it's pretty hard to get a pairing of 2 recessive genes, which makes the White Tiger unique. While I may not possess any recessive genes myself, I am unique in my own way. I like to do my own thing. These animals are beautiful and strong and everything I would want to protect me from dementors in times of need.