Ernest Hemingway

Six-fingered cats - Hemingway cats - were named in honor of Ernest Hemingway.

An excerpt from the article 49 facts about Ernest Hemingway
Hemingway museum staff cares for the cats currently living in Key West. Despite complaints from the U.S. Department of Agriculture, these cats have free contact with tourists visiting the museum; the national law allowing a maximum of four pets per household does not apply to Key West.