Guide:Protecting your village
Protecting your village from hostile mobs is important because pawns can die from them. To protect your village, hire warriors or archers. They will fight to protect other pawns from mobs (and sometimes from players). You can build a wall around your village, so most of the mobs can't pass into it.
If you don't like hostile mobs, you can set difficulty to Peaceful.
When expandable border is enabled, warriors can come to influence points to watch "distant" places.