How Krypto' Arch-Enemy!
                    
The 
                      spotlight falls on the world's mightiest dog in Superboy 
                      #92 (October 1961), with "Krypto's Arch-Enemy!" 
                      (The art is by George Papp; the Grand Comics 
                      Database credits Otto Binder with the script)
                    We begin in outer space, where Superboy and Kryto are amusing 
                      themselves by racing comets. Suddenly Superboy spots a world 
                      in trouble; an inhabited planet facing imminent destruction 
                      in much the same way Krypton itself was destroyed. Deciding 
                      to hang around and arrange the migration of the world's 
                      occupants to a new home, Superboy sends Krypto back to Earth 
                      to fill in for him.
                    Back in Smallville, young Lex Luthor is 
                      still fuming over the premature baldness he blames on Superboy, 
                      and has just perfected a device that will bring him revenge: 
                      a machine that fires a ray to grant him super-powers of 
                      his own. The catch is that it will only work once, and unfortunately 
                      Lex's pet dog, "Wolf" picks this 
                      very moment to leap onto Lex affectionately, causing the 
                      ray to hit the dog instead of Luthor.
                    Furious, Lex slaps his dog, yelling, "You miserable 
                      cur!" (sure he's a bad pet owner, but he's got a great 
                      vocabulary). All this gets him is an injured hand, as he 
                      realizes Wolf has acquired the super-powers he'd meant for 
                      himself. Always quick to adapt, Lex hatches a new plan and 
                      begins training Wolf in the use of his super-powers, getting 
                      him to fly by projecting an image of tasty bones onto some 
                      clouds, tricking him into bursting through a brick wall 
                      by hiding his supper behind it, and testing his invulnerability 
                      by firing cannonballs at him (because every small-town teenager 
                      has a working cannon, right?).
                    
                    Lex makes Wolf a "costume" in the form of a black 
                      cape with a skull and crossbones symbol, but tells Wolf 
                      he must earn it. First he dresses the dog in a Krypto-style 
                      "S" cape and has him make mischief all over town, 
                      first stealing a mirror from the astronomical laboratory, 
                      then a giant magnet from the Superboy Museum. 
                    With the people of Smallville growing increasingly alarmed 
                      at "Krypto's" out-of-control behavior, Police 
                      Chief Parker tries unsuccessfully to reach Superboy 
                      by radio, then reluctantly uses Kryptonite against Krypto, 
                      who's totally in the dark about the whole situation and 
                      flees the scene in sadness and confusion. Boring deep into 
                      a hill to hide, he uses super-hearing to learn why the town's 
                      against him. His super-sense of smell picks up the scent 
                      of another dog at the scenes of the crimes, which he follows 
                      to Luthor's lab. Spotting Wolf, Krypto deduces the truth 
                      and pretends to steal a bag of money from Pa Kent's General 
                      Store, leaving a trail of coins for the police to follow, 
                      which they do, right to Luthor's lab. As the police drag 
                      Luthor back to reform school, Krypto and Wolf engage in 
                      a super-dogfight, battling as dogs always do; by ramming 
                      their skulls together.
                    
                    When Krypto leaves the fight to save an airplane in distress, 
                      Wolf uses the opportunity to free Luthor, who then uses 
                      his ray machine to transfer Krypto's powers to Wolf, making 
                      Wolf double-super and Krypto...well, not super at all. Wolf 
                      blows Krypto away with super-breath (just blowing at all 
                      is a super-power for a dog!), but luckily Krypto lands on 
                      a nearby haystack. Never one to give up easily, Krypto locates 
                      Chief Parker's Kryptonite ("Now that I'm not super, 
                      I'm not at all affected...") and uses it on Wolf, who 
                      with double super-strength is now double-vulnerable to Green-K 
                      rays. With few alternatives left to him, Luthor uses his 
                      ray machine to return Krypto's super-powers, putting him 
                      back on even terms with Wolf. However, Superboy picks this 
                      moment to return from space, returning Wolf to non-super 
                      status and chucking Lex back in reform school.
                    A fun story for the animal lovers, as Krypto carries the 
                      whole adventure with little more than a glorified cameo 
                      by Superboy. You can't help feeling sorry for Wolf, who 
                      obviously wants nothing more than the approval and love 
                      of his master, who's a prize rat.
                    Tucked away in this shaggy dog story, however, are a handful 
                      of panels that carry a greater significance for the super-mythos 
                      in general. Near the beginning of the tale, we get a recap 
                      of Luthor's "origin," but even at this early stage, 
                      it's already undergone a subtle but crucial change. Just 
                      a year earlier in Adventure Comics #271, we saw 
                      young Luthor on the verge of the greatest scientific discovery 
                      of the age; he had created life...life! in a beaker in his 
                      laboratory. But just as a protoplasmic hand is reaching 
                      out of the beaker toward Lex, fire breaks out in the lab 
                      and Superboy accidentally wrecks the experiment with his 
                      super-breath, causing Lex's hair to fall out in the process. 
                      Lex later creates an "antidote" for Kryptonite 
                      which turns out to be intentionally temporary, as part of 
                      a plan to kill Superboy.
                    In "Krypto's Arch-Enemy," however, the story 
                      is altered. Now we are told Lex was working on a legitimate 
                      Kryptonite antidote when the fire broke out and Superboy 
                      bungled the rescue:
                    
                    No doubt this change was made in the interests of saving 
                      time and space, but it creates an important shift for Lex. 
                      Suddenly his hatred of Superboy is less about losing the 
                      greatest discover of his lifetime, and more about petty 
                      vanity. For years it would be this take on the story that 
                      would define Luthor to generations of readers. In the 70s, 
                      an episode of the Super-Friends would repeat the 
                      "made bald while working on a Kryptonite antidote" 
                      account, and thus define Luthor for millions of TV viewers 
                      who possibly never even read a comic. And so a decision 
                      made to save a few panels of story space slowly turned Lex 
                      Luthor into a pop-culture joke; the big bad super-criminal 
                      motivated by premature hair loss.
                    As far as I know, Wolf was never heard from again. I like 
                      to think Clark Kent arranged for his adoption by a loving 
                      family.