If you've ever had a hearing test—you know, listening for the beeps—then you've met an audiologist. That's the person who actually did the testing. Audiologists use state-of-the-art equipment to conduct their tests and advise patients on treatments for any issues they find (such as hearing loss). Does your grandpa wear a hearing aid? If so, an audiologist prescribed it. And audiologists are actual, real doctors—which means if you become one, you'll be a doctor, too. So if you think your hearing is pretty spectacular, then take good care of it, because you might make a heck of an audiologist.