Continuity mistake: The field trip is supposed to be on the 39th floor, as stated by Clark and the sign next to the elevator. The view outside the large windows as Lionel is talking shows that they are no more than 5 stories up.
Continuity mistake: As Alicia holds the kryptonite on Clark her hand turns between shots. While she says ".but you broke the rules first." there is a camera change. Before the change the frontal view of Alicia has her holding the kryptonite with the glowing part straight up. After the camera change she is now holding it so it points to her left.
Continuity mistake: While Alicia is in Clark's bed she says "I know you wanted to kiss me, Clark." and while she says this her hand is on Clark's face. The very next shot shows her hand is nowhere near his face.
Continuity mistake: When Alicia confronts Lana in the Talon, when Alicia says, "you're definitely not smarter" Alicia has the knife right on Lana's cheek. When the camera switches to behind Lana, as Alicia says, "You don't have my abilities" the knife is not on her cheek.
Continuity mistake: After Adam says "Look who's talking." you can see Lana raise the notebook she found as she starts to respond when the camera is behind her. When the camera jumps to the other side, facing Lana, the notebook is down instantly between shots and she has to raise it up again.
Answer: In the comics, Krypto is a dog from Krypton who was used as the passenger in a test launch by Jor-El, Superman's father, before he launched the actual rocket taking his infant son to Earth. Krypto's capsule was involved in a mishap, sending it out of Kryptonian orbit and eventually found its way to Earth where he linked up with the young Clark Kent. Like any native of Krypton, Krypto has superpowers on Earth. In Smallville, the dog is a standard Earth dog who has been experimentally injected with kryptonite, giving him super-strength for a limited period of time, who escapes and links up with Clark (who suggests the name Krypto, ostensibly because of the dog's cryptic origins). It doesn't take too long for the dog's strength to fade, and the Kents decide to keep him, although they ultimately name him Shelby, after a dog that Martha Kent had in childhood.
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