Revealing mistake: When the Tin Man breaks the flower pot for the Lion in the palace you can see the lines that it is supposed to break on. (01:00:55)
Continuity mistake: At the end when the Wizard and Dorothy are in the balloon basket, the tie down ropes on the right side keep going from tied to untied and back to tied again through different shots. (01:34:55)
Continuity mistake: After both Dorothy and Scarecrow have oiled Tin Man's elbows, Dorothy pulls the Tin Man's arm down and we see her throw the apple that she's holding down behind him. In the next shot it reappears in her left hand. (00:41:55)
Continuity mistake: In the scene where the Wizard is about to bestow 'awards', the Scarecrow is lined up second from the left as the Wizard begins to speak. In the next shot while the Wizard is still speaking, the Scarecrow 'jumps' to the far right. (01:29:10)
Revealing mistake: As Dorothy is about to walk into the cyclorama (backdrop) as she leaves Munchkinland, Munchkins are blurred, including a Munchkin soldier on the very far right, who becomes transparent with the matted-in flowers. (00:33:40)
Continuity mistake: When Dorothy is at the end of the movie confronting the Wizard about going home, after Toto opens the curtain Dorothy goes over there and automatically has him in her arms - she didn't bend down and pick Toto up. (01:28:55)
Other mistake: Toto is listed in the end credits as being played by Toto, when she was actually played by a dog named Terry. A few years after the film was released, Terry's owner/trainer, Carl Spitz, changed the dog's name to Toto due to the popularity of the film, but the credit is wrong for the time.
Suggested correction: It was probably done on purpose to promote him as Toto, not as Terry, even though the dog was well known both before and after this movie for appearing in many movies. Her most famous movie before Oz was Bright Eyes with Shirley Temple.
Revealing mistake: As the talking trees throw their apples at Dorothy and the Scarecrow, look closely at the upper right-hand side of the screen. One of the trees is shaking back and forth, while the others are motionless. It's being shaken by someone off-screen. (00:40:20)
Continuity mistake: Dorothy throws water at the Wicked Witch not knowing it will melt her. If you look closely the witch is drenched when it hits her but in the next close up shot she doesn't have a drop of water on her. (01:26:20)
Continuity mistake: In the scene where the Wicked Witch in Munchkinland goes over to observe the ruby slippers on her dead sister's feet, when she is up close there's not much space between her and the slippers but when she turns around and says "they're gone," she's further away, then she's closer again in the next shot.
Visible crew/equipment: As the Munchkins sing "Ding Dong The Witch is Dead" " the shadow of the cameraman and someone else can be seen on the nest of the green Munchkin eggs as they hatch into little pink Munchlets. (00:26:55)
Continuity mistake: When Glinda says, "Let the joyous news be spread" the bridge and pond are behind her. In the next shot she's turned around almost facing the pond. (00:23:40)
Continuity mistake: In the poppy field Dorothy falls down with the basket at her side. No one touches it but in the close-up it's by her head. (00:55:45)
Continuity mistake: While with Professor Marvel, when Toto eats the sausage and Dorothy scolds him, she places her left arm on the basket. A frame later her arm is resting by her lap.
Visible crew/equipment: When Dorothy first walks in the pigsty the shadow of the boom mic can be seen moving on the bottom left of the screen. (00:03:50)
Continuity mistake: The Tin Man starts chopping the Witch's door and it's not the same one we just saw three shots before. The wood is a different color and the dark metal brace has been polished in the close-up. (01:23:40)
Visible crew/equipment: The seams in the floorboard under the Haunted Forest set can be seen several times under the leaves. The best is in the close-ups of Toto. (01:15:30 - 01:19:35)
Continuity mistake: The rope around the Scarecrow's neck is tied differently throughout the scene after he meets Dorothy. The rag around his hat is rearranged also. (00:34:50 - 00:36:20)
Continuity mistake: When the Tin Man, Scarecrow, Cowardly Lion and Dorothy are cornered in the witch's castle, the scarecrow grabs the Tin Man's axe and chops a rope, releasing the chandelier, which falls on the guards. In the next shot, however, as the witch is shrieking "seize them", the guards give chase with only 1 or 2 laying on the floor. (01:24:55)
Continuity mistake: After the Witch throws a fireball at the Scarecrow in the woods and disappears, Dorothy is holding Toto. But when it cuts to a closeup of her, it looks like her shoulders are extended. When it cuts back to the wide shot, she indeed has her arms around the Scarecrow and Tin Man, even though she never put Toto down. (00:46:55)
