The killing curse works on animals in HPMOR. In Chapter 16, Quirrel tells the class that "The Killing Curse is unblockable, unstoppable, and works every single time on anything with a brain."
The view that "animals have souls" isn't particularly esoteric -- Aristotle asserted this, as did Thomas Aquinas. (http://en.wikipedia.org/wiki/Soul#Aristotle). So I don't think we should have expected it to be explicitly mentioned.
Both Aristotle and Thomas think of animal souls (and plant souls!) as qualitatively inferior to human souls, but they do claim they exist.
Now I have the image of someone wearing "armor" made of live animals of some sort in order to absorb Killing Curses.
There's a new Dark Wizard in town, boys and girls... and he's COVERED IN BEES!
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 96. The previous thread is at almost 300 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system.
Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, .
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: