The characteristic ear-folding of the breed is caused by a spontaneous mutation, a fusion of the middle section of cartilage cells (mesodern) in the embryo. It is a incomplete dominant gene that must be present in one parent to pass on to offspring.
Breeding a folded-ear cat to a straight-ear (SE) cat ONLY is recommended. Breeding folded-ear cats together may cause complications such as cartilage mutation in the tail making it rigid and foreshortened, and stiffness or deformities in the hind legs and feet.
Scottish Fold kittens are not born with folded ears. The ears of the kittens that carry the gene start folding usually about the 21st day. The folding process begins by the crimping of the outer edge of the ear near the base, which gradually tightens with the ears tipping downward onto the head, giving the appearance that they are sliding off the top sides of the head. There are different types of ear folding: single fold; loose-in-back, tight-in-front; and tight, double, capped-to-the-head fold, which is the most desirable.
* tail medium to long in length, flexible, tapering, proportionate to th
* coat should be short to medium-short in length for shorthairs, dense, plush, even and full of life; medium-long to long in length for longhairs, britches, tail plume, toe tufts, and ear furnishings should be
clearly visible with a ruff being desirable.
* Colours allowable: white, black, blue, red, cream, shaded silver, shaded cameo, chinchilla, shell cameo; black, blue or cameo smoke; tortoiseshell, blue-cream; bicolours of black, blue, red, cream, calico, dilute calico, tortoiseshell & white, blue-cream & white; all four tabby patterns of classic, mackerel, spotted or ticked in silver, blue, brown, red or cream; tabby & white, silver and brown patched tabby & white.