There is no need to fear   For the Mutt of Might is here   Secret ring he has filled   With a super energy pill   Trouble calls, he's not slow   It's hip, hip, hip and away he goes      When criminals in this world appear   And break the laws that they should fear   And frighten all who see or hear   The cry goes up, both far and near   For Underdog, Underdog   Underdog, Underdog      Speed of lightning, roar of thunder   Fighting all who rob or plunder   Underdog, Underdog, Underdog      When Polly Purebred starts to fall   From buildings twenty stories tall   She knows the hero she can call   His ears prick up when Polly hollers   Underdog, Underdog   Underdog, Underdog      There's no need to fear or quaver   Underdog is here to save her   Underdog, oh, Underdog      And when our woeful monologue   Is how by evil we've been flogged   Then breaking through the clouds and fog   Not plane, nor bird, nor even frog   Comes Underdog, Underdog   Underdog, Underdog      Now unleash the Dog of Wonder   Tearing evil's bonds asunder   Underdog   Oh, what a wonder dog   Now here's the epilogue   Underdog, Underdog