Earthdog test a dog sport I didn't know about

Earthdog trials are not new, but they are to me mostly because I never owned a Terrier or a dachshund so when I was searching dog sports Earthdog trials popped up.

Basically the dog runs in a tunnel at the end of the tunnel is a rat or mice. How active and how high prey your dog's activities are trying to get the rat. The rats in these trials are safely inside a cage at the end of the tunnel. In Canada I think we can't use rats, but we use Gerbils instead.

Below is a CKC rules and a youtube video.

le-Books/327-01-05%20Earthdog%20Test.pdf
http://www.youtube.com/watch?v=pljUIID8WUQ