What causes cryptorchidism, and how common is it? Cryptorchidism affects less than 2% of cats but may occur more often in purebred or pedigreed cats, such as Persians and Himalayans. The condition is commonly seen in families of cats and appears to be inherited, although the exact cause is not fully understood.Click to see full answer. People also ask, how common is cryptorchidism?It is the most common birth defect of the male genital tract. About 3% of full-term and 30% of premature infant boys are born with at least one undescended testis. Cryptorchidism is distinct from monorchism, the condition of having only one testicle.Furthermore, why are my cats balls swollen? Testicular Swelling in Cats. Orchitis is inflammation of the testes, while epididymitis is inflammation of the testicular tube where sperm is stored. While the condition can be chronic, acute forms caused by direct trauma to the scrotum are most common. This condition is rare, but not unheard of in cats. Also, what is cat cryptorchid? Feline cryptorchidism, also called undescended testicle or retained testicle, is a condition where one or both of the testicles stay in the belly, instead of being in the scrotum or sac. Another way to describe cryptorchidism is by location.At what age should a male cat be neutered?Male cats should be neutered at six months which is usually the time when they become sexually active, however, they can be neutered at any age thereafter. If a cat is neutered after he reached 12 months of age, beware that you may not enjoy the full behavioural benefits of neutering.