Cool! Love to shoot the little guys.  Several years back I got to go with one of my crow hunting friends out to South Dakota.  Matter of fact he is out there this week blasting away.  We hunted for 3 days and killed over 800 dogs.  We hunted the Indian reservation and they were every where.  I would do it more but it is 1700 miles one way for me.  I was shooting a .223 and my trusty .17 cal.  I was surprised at how many I could blow up with the .17.  Can't wait to go back one day.