Cats have only one egg, which may be due to cryptorchidism. Cryptorchidism refers to abnormal testicular descent that fails to descend into the scrotum, including incomplete testicular descent and testicular ectopy. Premature cats often have cryptorchidism.

And the situation of being born with only one testicle has almost never appeared in clinical practice. More often, cats have hidden symptoms. testis. Therefore, to confirm the diagnosis, you need to go to the hospital for examination.