Why are Sphynx cats hairless?

Why are Sphynx cats hairless?
Sphynx cats are hairless due to a naturally occurring genetic mutation. This mutation affects the development of hair follicles and results in a lack of fur on their bodies. The hairlessness trait in Sphynx cats is a recessive gene, which means that both parents must carry the gene for their kittens to inherit the hairless trait.