We rescued a dog about 2yrs ago. She is awesome, and has presented us with some challenges. (she had demodex, and appears to have been abused as she is very afraid of people).
Anyway, we got her DNA checked to find out what breed she was. (My wife and I were sure she was lab/greyhound). So, the DNA results come in and she was English setter, with traces of Akita and Chow.
Here is the site (no affiliation, just the company we used):
http://www.mmigenomics.com/CHBTKits/order.php
In order to not look like nutcases, we justified this because of her demodex. Some breeds, like collies, cannot use medicines containing ivermectin. So, we used this test to validate she wasn't. (Plus we really, really, wanted to know).
BTW, he picked you. You are lucky to be blessed with a dogs love. Enjoy.
Here she is with her big sister, our Lab....