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!
Border Collie
The Border Collie is a working and herding dog breed developed in the Scottish borders for herding livestock, especially sheep. It was specifically bred for intelligence and obedience.
Considered highly intelligent, extremely energetic, acrobatic and athletic, they frequently compete with great success in sheepdog trials and dog sports. They are often cited as the most intelligent of all domestic dogs. Border Collies continue to be employed in their traditional work of herding livestock throughout the world.
Description.
In general, Border Collies are medium
towards children, they are sensitive and prone to resentment.
Description Activities.
Pulis are intelligent, agile dogs. Despite their bulky appearance and very thick coat, they are very fast, agile, and able to change directions instantly and are obedient enough to train for athletic competition. They are devoted and form close bonds with their owners.
The breed is intelligent and can do well in obedience training if begun early. Traditionally, the Puli dog breed was used as a herding dog and sometimes even as a livestock guarding