Here's why:
* Polydactyly is a separate trait: The calico coloring is determined by the X chromosome, while polydactyly is caused by a different gene.
* Polydactyly can occur in any cat: It's a dominant trait, meaning even one copy of the gene is enough to cause extra toes. This means any cat breed, including calicos, can have polydactyly.
* Calicos are more visible: Calico cats are often more noticeable due to their distinctive tri-colored coat. This might lead to the misconception that they are more likely to have polydactyly.
In short, the connection between calico cats and polydactyly is purely coincidental.