Rex the Wonder Dog
From Superdickery
A DC Comics character, he is a white dog of an uncertain breed (although he appears to be a German Shepherd). Rex has preformed a amazing number of feats for a dog.
He has fought communists, saved kittens, become an honourary Indian Chief, driven a wagon, fought a T-rex, run on an invisible path in mid-air and drank from the Fountain of Youth, giving him immortality.
His one major nemisis is The Bear. Fortunately, Rex has been able to defeat this fierce foe a number of times.
He is friends with Detective Chimp.