dna testing for dogs

Photo attached. Seller told me both parents are Rottweiler and father had some German shepherd. Seller was a known liar on other facts, so I wanted a DNA test. What do you think about this results after seeing the picture? 27% American Bulldog 21% American Staffordshire Terrier 12% Miniature...

Hi, My name is Joey Garrison. I'm a reporter for USA TODAY. I'm writing a story about DNA testing for dogs and would like to speak to dog owners who have had their dog's DNA tested. I would like to discuss their experience with DNA testing -- why they did it, what the results told them, and...