Which Shetland Sheepdog won Best of Breed at Westminster?

You're asking about a specific dog show win, and while I can access a lot of information, I don't have access to a live, constantly updating database of dog show results.

To find out which Shetland Sheepdog won Best of Breed at Westminster, you can do the following:

1. Check the official Westminster Kennel Club website: They usually have a section dedicated to past winners and results.

2. Search online: Websites like Dogshow.info or other dog show news sites might have archives of results.

3. Use a dog show database: There are specialized databases that track show results. You can search online for one that focuses on Westminster.

I hope this helps you find the information you're looking for!