Video prompt:  a compilation of some wild horse fights, featuring a beautiful grey mare as the main protagonist. It captures the horse's aggressive behavior as it runs through a field, displaying its powerful and energetic nature. The video is a great showcase of wild horses in their natural habitat and provides an exciting visual experience for viewers."
Defect: Deformation (any reason involved with a movement)
Explanation: As the horse runs, its mane changes length erratically, appearing long at one moment and short the next. This inconsistent fluctuation creates an unrealistic effect, disrupting the natural flow and continuity expected in the horse's appearance.