When the Pegasus is wounded by the Chimera, we see the claw marks and blood on its left side. Yet, only a minute later the claw marks and blood have moved to its right side.
Throughout the movie Belleros has a piece of leather wrapped around his upper right arm. But after fighting with Orthos, the piece of leather switches to his left arm. It then switches back to his right arm for the rest of the movie.
When Belleros' father shoots the dragon at the start of the film, he is stood in the tall grass on the left of the beast with the ocean on the right side but his arrow strikes on the right of the animal.