Continuity mistake: When the announcer tells Droopy and the wolf about the prize they can have if they win the bullfight, there is a red wall behind the announcer that keeps disappearing and re-appearing between shots.
Continuity mistake: When we see Droopy reading the magazine in his dressing room at the beginning of the short, there are two magazines in front of him on the table. But after a quick cut to the picture of Lima Romay, we return to Droopy and there is now only one magazine.
Continuity mistake: When Droopy says he's a failure, he looks at the magazine of Lina Romay and you can see the magazine spine is on the right hand side. But when we a close up of the magazine in the next shot, the spine is now on the left hand side.
Continuity mistake: When the bull sends the wolf flying out of the stadium, you can see there is nothing in the wolf's hands. But when he lands in the cactus, he is now holding his cape. The cape disappears when he is joined by the bull later on in the cartoon.
Continuity mistake: When Droopy thinks he's lost the bullfight, he looks at a picture of Lina Romay and you can see his red blanket is behind him. After a quick cut of Lina, we return to Droopy and the blanket has moved a few inches back.
Continuity mistake: Towards the end of the cartoon, the bull draws a moustache and beard on Lina Romay on Droopy's magazine, but when Droopy shows the magazine to the announcer after winning the bullfight, the moustache and beard are gone.