Does your puppy turn his nose up at his own chow--because he wants some of whatever it is that you’re having? A new study finds that, when it comes to food, dogs recognize human social signals about what’s good. The work is in the journal Public Library of Science ONE . [Sarah Marshall-Pescin et al, Do Dogs ( Canis lupus familiaris ) Make Counterproductive Choices Because They Are Sensitive to Human Ostensive Cues? ]