Just read this in dogs monthly.
Want to figure out your dogs ancestry and breed influences.
http://www.whatbreedismydog.co.uk
Apparently its only £60 and you can get the results in a few days. I have not used it myself but i saw the article and thought wow! I thought you guys may like this.
Disclaimer - i can't recommend or endorse this site etc. simply just read it in a mag and thought i would spread the word.