Ruby's at least part Border Collie, I've got a BC and they're not meant to be on leashes ...
Depending on how long it was since they last let her off her reaction was predictable :-D

4 more comments have been lost in the ether at this killed duplicate.

This video has been seconded as a duplicate; transferring votes to the original video and killing this dupe - dupeof seconded with isdupe by eric3579.

*dupeof=http://videosift.com/video/Tex-the-border-collies-winning-Agility-course-run

This video has been nominated as a duplicate of this video by blackfox42. If this nomination is seconded with *isdupe, the video will be killed and its votes transferred to the original.

Your video, Border Collie named Tex shows Superdog agility, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

Damn I love Border Collies -- I'm gonna buy one someday and let it do my taxes.

Friends of mine have a purebred Border Collie (Charlie) and a Husky/Shepard mix (Ava). Charlie runs like the wind, barely making a whisper. Total stealth mode. Ava is faster, but she doesn't run so much as grab onto the ground and pull the planet around under her. It's really interesting to see the different styles. Charlie is a figure skater, Ava is a tractor pull.

That's not a border collie is it? Golden retriever?

Border Collie? Automatic upvote!

Sheep - 1
Old man - 0

Border Collie - 354

Border collies will be turning up at job centres around the world soon...

Once they realize it's not a border collie piloting the drone, they'll ignore it.

Border Collies, the only dogs who can do differential calculus!

Was that a Border Collie?