Manuel kills the bull, but in the wide-angle shot that follows, its body is nowhere to be seen in the pen.
Chris and Vin are riding the same horse and fall off of it when it is shot. As they fall, Chris is on the left of the screen and Vin is on the right. In the very next shot, as they both stand up, Vin is on the left and Chris is on the right.
While Chico is shooting the Winchester rifle from the bell tower, there is one moment where he fires twice rapidly without cocking it.
Throughout the film, Chris changes from wearing two guns to wearing just one at the end.
As the bandits flee the village after the second attack, two of them are "shot" off their horses. However, no gunshots are heard.
When they are leaving the courtyard on horseback after teaming up, the camera rocks when the truck it was on suddenly accelerates to keep up with them. Shortly after that, as they pass through an archway and turn right to leave town, you can see the shadow of the camera truck on the wall of a building as it stays with them as they're riding out of town.