1, artistic processing and exaggeration: As an artistic form, food chain movies need some artistic processing and exaggeration to highlight the theme and increase the impression. Some plots and details in the film have been artistically processed, which are not completely in line with reality.

2. Difference of ecological environment: The ecological environment in food chain movies is different from that in reality. For example, some details of the ecological environment will be changed in the film for shooting convenience or visual effect.