Wilbur's brothers and sisters

In the beginning Wilbur was the runt of a large litter. There were eleven piglets. Wilbur's mother only had enough milk to feed ten piglets. Wilbur had ten brothers and sisters according to Chapter 2. Wilbur's siblings were already sold by the end of the chapter

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They were seen in the beginning fighting over milk pushing Wilbur around. They were mentioned that they were sold