User blog comment:JoePlay/Harry Potter and the Deathly Hallows - Part 2 Giveaway/@comment-3473485-20110708233601

I think my Patronus would be a border collie, because they're smart, a bit like me (trying to be modest there ;D ) and I love dogs because if I were fending off Dementors (The main reason for them, although they can be used to send messages), I would want something helping me, that I felt comfortable with. And that is why I think my Patronus would be a border collie.