The Question and Answer section for Charlotte’s Web is a great resource to ask questions, find answers, and discuss the novel.
Fern persuades her father to have mercy on him. She argues that it isn not fair to kill a piglet just because it is small.
This depends on what event you are referring to.
From the text:
The trough tipped up and then came down with a slap. The goose egg was right underneath. There was a dull explosion as the egg broke, and then a horrible smell.