This is a good question. As the previous educator said, Lazarus, one of Zaroff's hounds, died in a swamp, as he was following a huntee. This piece of information comes out when general Zaroff warns Rainsford about the swamp. He does not want Rainford to die there, because he wants a greater challenge. There is also an ironic point about the hound's name. The name, Lazarus, is found in the New Testament; he is the brother of Mary and Martha. Jesus loved him and raised him up from the dead. Lazarus, the hound, here had no such luck; he simply died, as much as Zaroff loved him, which the text explicitly says.
The deplorable part of it was that Lazarus followed him. You can imagine my feelings, Mr. Rainsford. I loved Lazarus...
From this perspective, general Zaroff is the anti-Christlike figure.
There is another important point to consider. Zaroff, as the architect of the game, always has the advantage. Not only does he have Ivan to help him and knowledge of the terrain, he also has a dozen hounds to track the huntee. All that Rainsford is given is clothes, food, and a knife. Here is the quote:
Then a businesslike air animated him. "Ivan," he said to Rainsford, "will supply you with hunting clothes, food, a knife.