A polydactyl cat is a feline with extra toes on its paws, typically having more than the usual five toes on each front paw and four on each back paw. This genetic trait is caused by a mutation and can result in cats having six or more toes on each paw. Polydactylism is more common in certain breeds, such as the Maine Coon, and is often associated with specific geographic regions. These cats are known for their unique appearance and can have enhanced abilities for climbing and gripping due to their extra digits.