User blog comment:JoePlay/Harry Potter and the Deathly Hallows - Part 2 Giveaway/@comment-4142845-20110713135203

My Patronus would be would be in the form of a beetle. Beetles are known to bring good luck in some cultures. Some fly, some swim, and most can survive conditions that us humans Muggles can’t. Even if the conditions were bitter cold and soul-sucking, a beetle would most likely survive and would be able to protect me from the grips of a Dementor. It goes to show that no matter how small you are (even if you’re the size of a beetle), you have the power to fend off any evil – even a Dementor. Here’s an experiment: place a beetle in a coffee cup and hand it to an unsuspecting man or woman. I think you will find that it will send them running for the hills as fast as they can. You will achieve the same results with a Dementor.