Just a moment ago I encountered a bug, at least I think so, because I don't recall any other animals being this aggressive ever.
Me and my friend tried to fight a pack of wolves on boats. When we noticed they had armour we gave up. I had lost their agro so I went to put my boat into a cart, hooked it up to my character and began teleporting. Suddenly, wolves lost their agro on my friend and begun wandering towards my character, and entered into combat with me when I was almost teleported back to my hearthfire. They immediately chomped me to unconsciousness and I was left laying there with 30 HHP left. I thought, it wasn't so bad, I can still teleport back when I will begin to wake up, but a second after I was knocked unconscious, one wolf entered combat with my unconscious body and chomped me to death with one hit.
So my question is, is this intended behavior? I always could just teleport out of a dangerous zone, but maybe unconscious bodies do not get protected from new animals that stumble upon the body?
TLDR: My unconscious body got chomped to death by wolf.