Readers, meet Sam, as in Sam Purvis, as in beloved pupster of H&R's art director, Adam Purvis. Sam, a Rat Terrier, is on a considerably smaller physical scale than Happy and Murphy, the two Labs introduced a couple of posts ago. However, I suspect no one's told him he's a little dog. And as you can see from his expression, he brings a skeptical honesty to his editorial duties. "Dad–dude!–you're going to put WHAT on the cover of H&R this month?!? Another horse?! Did you forget who is REALLY 'ma