Based on the context provided in the story, the most accurate prediction is:
Mike Cameron will not attempt to get another working dog because it might be part dingo.
This prediction aligns with the narrative's themes surrounding the uniqueness and potential wild nature of the dingo, as well as the man’s initial view of the pup he encounters. The mention of the pup's dingo heritage and the implications of having a dog that is part dingo would likely lead Mike to reconsider obtaining another working dog.