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.