This unusual sex chromosome combination will render the male cat sterile. Cats have AB blood groups just like people. A form of AIDS exists in cats. Siamese coat color and crossed eyes may be caused by the same gene. The color of the points in Siamese cats is heat related.
Cool areas are darker.
Siamese kittens are born white because of the heat inside the mother's uterus before birth. This heat keeps the kittens' hair from darkening on the points. There are many myths about cats. Check this page to see some of them discussed, and to find out the true facts. Though rare, cats can contract canine heart worms.