Superman #170

Superman's faithful canine companion Krypto takes center stage on this 2001 issue, and the cover by Ed McGuinness (inked by Cam Smith) makes an immediate impression — a massive, snarling Krypto fills the entire frame, red eyes crackling with energy, drool flying, his Superman-insignia collar and flowing red cape leaving no doubt about whose dog this is. The bold "BEWARE OF SUPER DOG" warning stamped across the top sets a playfully menacing tone that's hard to resist. Jeph Loeb and Dale Keown helm the interior story, promising the kind of big, fun energy that cover absolutely delivers on.