If I remember correctly, Auroroa Bears and Aurora Wolves will aggro and attack from a much further distance than regular ones. I honestly stay out of areas where I know either might be at night. But, lol, I am doing a test in the Test branch right now on Bear behavior. So... I have to intentionally try to aggro a bear and get it to stand up on me. xD

Charging aurora bear :) I was surprised by the distance - he was quite far and charged on me :( I am still living but without boots, toque, jacket, gloves

Aurora Bear! :O