"But I thought Maine Coons had extra toes...?"
Some "original" Maine Coons were polydactyls (had extra toes). However, modern purebred Maine Coons are rarely polydactyls. This is because all cat associations automatically disqualify polydactyls from competition in the purebred classes. Because of this, most polydactyls were culled from the Maine Coon breed decades ago, and only a few breeders continue to work with them. Since the polydactyl gene is dominant, you can't get a polydactyl kitten unless at least one of the parents is also a polydactyl.