The reasons why cats have only one egg:

1. When a cat has only one testicle, it may be cryptorchidism. Cryptorchidism refers to abnormal testicular descent and failure to descend to the scrotum, including incomplete testicular descent and testicular ectopy.

2. The testicles in the body may become diseased, resulting in only one testicle, causing diseases of the cat’s reproductive system.

Solutions and dangers of cats with only one egg:

1. The best way is to go to a pet hospital for castration surgery, which can effectively prevent cats from getting prostate inflammation and other diseases.

2. Affect fertility. Cryptorchidism produces abnormal sex hormones, which can affect normal testicular development and cause normal testicles to atrophy. If there is bilateral cryptorchidism, there is no fertility.

3. Cryptorchidism secretes abnormal hormones, causing prostate lesions, hematopoietic dysfunction, general hair loss, etc.