S2.E9 - "The Dog Who Knew Superman" - Superman rescues dog from well and then recognizes Clark when they bump into one another in Metropolis. The dog's owners want to cash in on the dog's keen sense of smell.
My kids and I really enjoyed this episode. Clark is adorable with the dog. You really want Clark to end up with the dog in the end, even though he has an owner who loves him to death. Unfortunately, she's married to a thoughtless mobster, who dropped the dog in the well in the first place. Mobster realizes that the dog can identify Superman by his smell and tries to use him to find Superman's secret identity.
Funniest thing about this episode, the hoodlum calls his peroxide blonde wife (the dog's owner) "Chicken" as an endearment.
