At this there was a terrible baying sound outside, and nine enormous dogs wearing brass-studded collars came bounding into the barn. They dashed straight for Snowball, who only sprang from his place just in time to escape their snapping jaws.

George Orwell

Animal Farm. Chapter 5. Napoleon violently drives Snowball from Animal Farm. The two characters are said to represent Joseph Stalin and Leon Trotsky who were locked in a power struggle.