Final answer:
The provided text does not give information on the death of Zaroff's best dog from 'The Most Dangerous Game.' It seems to be confused with a different story, which is 'To Build a Fire' by Jack London, focusing on different themes.
Step-by-step explanation:
The question refers to General Zaroff's best dog from the short story 'The Most Dangerous Game' by Richard Connell. However, based on the provided text, this seems to be a mix-up with another story, likely 'To Build a Fire' by Jack London, which involves a man and a dog in the Yukon. The excerpts do not discuss the death of Zaroff's dog, instead, they explore the themes of nature versus man, and survival in harsh conditions. In 'The Most Dangerous Game,' Zaroff's best dog indeed met his demise, but the provided passages do not give information on that event. Consequently, without the correct reference to 'The Most Dangerous Game' or specific knowledge about the fate of Zaroff's dog from the text, it is not possible to confidently answer how one of Zaroff's best dogs died.