Hemingway Cats are a breed of polydactyl cats, meaning they have extra toes on their paws. This unique trait is a result of a genetic mutation and can give them a distinctive appearance. These cats are often associated with Ernest Hemingway, the famous American author, who had a fondness for them and kept many at his home in Key West, Florida. Today, the descendants of Hemingway's cats are cared for at the Ernest Hemingway Home and Museum. Visitors can see these playful felines roaming the property, and they are known for their friendly and social behavior. The cats are a popular attraction, drawing cat lovers and literary fans alike.