Hey there! I love how collies can be good herders.
I do too.  I love collies in general.
Most collies are very active dogs. Their herding instinct is really strong.
Yes, definitely high energy.  Is there something specifically that collies are generally used to herd?
I think they are good at herding sheep.
I see....if I remember correctly, was Lassie a collie?
Yes, Lassie was actually a Rough Collie.
What is a rough collie?  I've not heard of that term before