An article in the Wall Street Journal looks at companies that will test your dog's DNA to tell you what breed it is. A dog, called Parrot, gave cheek swabs and a blood sample to four different companies, that charged between $60 and $125. Each company gave back different breed as contributing to Parrot's ancestry, ranging from Italian greyhound to Staffordshire terrier to bull terrier and with maybe a small percentage of bichon frise.