Episode 80 of "Smallville"
s04e14 Krypto
Title: Krypto
Original Air Date: 02/16/2005 on WB
Director: James Marshall
Writer: Luke Schelhaas
Guest Stars: Alex Green (Doctor Kline), Diego Klattenhoff (Josh Greenfield), Bud the Dog (Einstein/Krypto/Shelby), Bucks the Dog (Hercules), Nolan Funk (Zack Greenfield)
Plot Outline:
Lois accidentally hits a dog and brings it back to the farm to heal, but Clark quickly realizes it has super-strength. He investigates and discovers it was pat of an aborted LuthorCorp experiment...and that robbers are using the dogs to help them steal money. Meanwhile, Lana wonders what Jason is up to with his mother, and Jason is forced to ask Genevieve a few questions of his own.