As horrific as that video is, it leaves me with so many questions. How did the deer stay alive so long? Why didn't it scream / fight more? What caused it to kick into survival mode right at the end, seconds before death?

I intentionally didn't link it :(

Warning to those who want to watch : it is horrible, and I just watched a few seconds. Really, don't watch it if you can't see nature in its most raw form