Long but good info!
Dog breed genetic tests put to the test - VIN
Also, why it makes this less than believable: http://sheltermedicine.vetmed.ufl.edu/li...ds/dna-results/
This post on a shelter medicine website where they showed pictures of dogs, the DNA results, and the shelter staff guesses as to breed, but they presented it as if the DNA results were definitive. But that doesn't seem like it is so.
A friend who is a scientist explained to me why they are not fully accurate but I didn't completely follow it!