Watch Dogs

We have a big wall around the school, but we are still out in the middle of nowhere so we have a few watch dogs that we let out at night.  They aren't very mean or anything and they do a lot of barking at nothing in the middle of the night, but I guess they might deter an intruder.  Sometimes, we'll be sitting in our living room after dark working or playing cards.  We'll hear the dogs start barking and immediately hear a group of students run away screaming.  It never stops being funny.