American Polydactyl Cats are a unique breed of cats that have extra toes on their paws. They are also known as 'Hemingway Cats' due to their association with the famous author Ernest Hemingway. These cats are known for their intelligence, affectionate nature, and
From Wikipedia
A polydactyl cat is a cat with a congenital physical anomaly called feline polydactyly, which causes the cat to be born with more than the usual number of toes on one or more of its paws.