Cerebellar hypoplasia Cerebellar Disorders Some congenital defects (defects present at birth), are inherited from the parents, while others are caused by environmental factors in the womb, such as nutritional deficiencies or some viral... read more , a lack of development of the cerebellum, a part of the brain critical for controlling balance

Eye and eyelid defects

Heart defects Congenital and Inherited Disorders of the Cardiovascular System of Cats Congenital abnormalities of the cardiovascular system are defects that are present at birth. They can occur as a result of genetic defects, environmental conditions, infections, poisoning, medication... read more

Cleft palate Mouth Congenital abnormalities are conditions that an animal is born with; they are often referred to as “birth defects.” Some of these conditions are inherited and tend to occur within particular... read more (uncommon in cats but occurs more often in Siamese)

Cryptorchidism Cryptorchidism Several reproductive diseases can affect male cats. Although most of these disorders (other than cryptorchidism) are rare, the most commonly encountered conditions are discussed below. Cryptorchidism... read more (apparent absence of one or both testicles)

Polydactyly (more toes than normal; usually occurs on the front paws and rarely causes any problems for the cat)

Deafness associated with white fur and blue eyes