Yep! We did one on Jasper when he was alive and found pretty much what I expected. I always thought he was dachshund and jack russell mixed with something large, and his results showed one parent was dachshund/JRT and the other was a golden retriever mix.

When I adopted Bedlam I used a DNA test to confirm that she was a Bedlington terrier and then sent out a separate DNA test to UC Davis to test for the liver disease that affects her breed (she doesn't have it!).

My best friend's dog came back with a fair percentage of Shar Pei, which she thought was absurd at first as the dog doesn't look at all Shar Pei...but then the health problems started setting in. She has massive skin issues, much like a shar pei....allergy testing has revealed that she is even allergic to human dander.