Survivor NPCs Should Respond to Threats

I feel like it would be better if Survivor NPC's responded to threats somehow. I had a couple of wolves enter my base and I stood by to see how they react and both parties just completely ignore each other. It feels odd and kind of ruins the immersion. I think a cool addition to the game would be to have the NPC's either attack the threat or run from it, depending on who they are and what would make the most sense for them. If they get attacked and their HP reaches 1 you could just have them go into an injured state where they are stuck in a pose for a set amount of time until they recover.