How do I make animal AI

Howdy, I would like to possibly know how to make animals. I would like to model up a sheep or a cow or a chicken etc. and put them into my game as animals that walk around. I don’t want them to do much, maybe just walk around. Nothing really else. I would also like to eventually be able to kill them with my axe I modeled today.

Right now the axe has one script and that is that when I mouse click it plays my swing animation I made. That’s it and later on I would like to be able to kill them. I don’t have an idea for this game, I’m just testing my skills.

Overview: Want to be able to have animals that don’t do anything, just walking around, and relax. I also want to be able to kill them with both melee and firing weapons. I really only want to know how to make these guys just move around and sit there. I can do the killing thing later on because my world is kind of lonely. I’m using Blender btw.

you can look there unitygems.com the beginning shows how to give basics moves to a NPC. That can be applied to an animal. You could then add a running away condition when shot/axed at and get:

Vector3 dir = (player.position-transform.position).normalized * -1;

as a moving vector opposite the player position.