The full name of Highland cat is Highland Fold cat, which is actually a long-haired Fold cat. It belongs to the same category as Scottish Fold cat. The genetic defect of Highland cats is that they are prone to bone problems and cartilage abnormalities. Cats suffering from this disease are reluctant to jump due to pain in one or more limbs, and often walk stiffly because their joints cannot bear weight.

After the onset of the disease, the limbs of this kind of cat are shorter than that of normal cats, especially the toe shape is abnormal, which is manifested in a crouching posture, a very short, thick tail, and a thick tail base that cannot be bent. The severity of symptoms worsens with age.