While playing NMS yesterday, I was circled by a dog-looking animal. I took a pot shot at it to scare it off, then I noticed it was with a cub. The cub attacked me while what I determined was the mother watched. I couldn't kill the cub or the mother since it's just nature, so I acted hurt while I let the cub attack me a bit then fled. As I fled, I found the father watching from a distance, making sure the environment was safe. I think this is the most natural AI I've ever experienced in a videogame.