Answer: A simile.
Step-by-step explanation:
While being interviewed by a local news crew before the game against his old friends, now turned enemies, Arnold Spirit Jr. (known as Junior) feels uncomfortable with the questions. He´s suspicious of white people wanting to see Indians play against each other as if they were a degrading spectacle, like "watching dogfighting". This is a simile, a figure of speech that compares two different things by remarking their similarities.