As Sonora begins to cut her hair, there are already noticeable spots of cut hair visible.
When Sonora introduces herself to Dr. Carver and he tells her to leave, she stubbornly anchors herself to her chair twice. The first time she is shown from behind as she wraps her feet around the chair legs then grips the seat with her hands. Then the close up shows her already gripping with her hands and then wrapping her feet.
When Sonora is learning how to perform a "moving mount," the amount of "blood" on her collar varies between more and less from one shot to another.
At the beginning of the movie when Sonora jumps the fence on Lightning on the way to school, he only breaks the top board of the fence. When the cows are breaking out of the field through the newly broken fence, both boards are suddenly broken.
When Sonora and Clifford are talking by the hot dog roaster at the carnival, for the first shot, the chain is off the sprocket then suddenly is back on in the second shot.
At the beginning of the film when Sonora rips the lace off her skirt to use as a rope to guide the horse with the lace is short as she puts it on her horse, but then after she jumps on her horse the lace is all of a sudden twice as long.
On their way to Atlantic City, Sonora sings the song "On the Boardwalk (In Atlantic City)," which wasn't written until 1946 by Mack Gordon and Josef Myrow.