Why do calico cats have six toes?

Like the person above said, a cat with 6 toes means they have a recessive gene that makes it called a polydactyl cat. Its just a cat with more toe's than the average cat. Calico's are just different. You can ask the same thing for humans, 'Why do some humans only have 11 pairs of ribs?'. It's just the way they are.

PS

To the person above, how did u know that recessive gene thing? Ever thought of being a doctor or a vet? I want to be a vet. That would be so awesome...