Collies are such great dogs, especially with how much I love herding dogs.
How long has the Collies breed of dog been around? 
I'm not sure, but I do know that they are usually medium sized dogs with pointed snouts which I love.
What other herding dog breeds are there? 
There's the Australian Cattle Dog, which of course herd cattle.
Is the Australian Cattle Dog a large breed of dog? 
Nope, they are medium sized dogs with short coats.
What are the large dog breeds that herd? 
There really aren't any. On another note, Collies typically display great agility and stamina.