So here is the story:
Yesterday I let all of the girl sheep out of their pen for a stroll around the property - good exercise for them and good weedeating for my yard. Everyone was having a great time...even the lambs, who enjoyed bouncing around and tasting the grass/weeds too. When it was time to go back to the pen I called "Come sheep, sheep" and they all followed me back to the pen. As I watched them enter the pen I realized "hey, I'm missing two black lambs!" I turned around and saw Ranger about 10 feet up the path from me. When he heard me say "I'm missing two lambs," he turned and ran around the house - returning quickly with the two lambs in front of him! He herded them all of the way back and into the pen. I was absolutely flabbergasted...he knew what I needed and went into action. What a dog!!