Mr. Whymper is helping a group of pigs for possible motives of gaining their trust to get closer to them, being a good Samaritan, or helping them for money. The benefits are that he earns money, is liked by the pigs, and they trust him. However, there are potential problems such as the pigs losing trust in him as a human, or he could be a double agent. Additionally, humans may be hard to negotiate with, think he sides with the pigs, look down on him, and not trust him.