Collies are such great dogs.
I agree! They are the perfect dog for herding livestock! 
Oh is that how they are used? Cool!
Yes! They are so well trained that they react to a whistle or word and know on command what to do.
That's insane that they are that smart!
The breed came from Northern England and Scotland!
Oh really? I had no idea!
Yep, they are even known as one of the most intelligent out of all domestic dogs.