You'd think dog owners would ace this test: can you correctly identify all six dog barks? According to the study, even people who don't have dogs could interpret dogspeak for stranger alert and on the attack. But many dog owners (myself included) had a tougher time differentiating between barks for "let's go for a walk" and "give me that ball." How did you fare? Does your dog's communication correlate with the barks demonstrated here?