What is cryptorchidism? Cryptorchidism is a common abnormality in male dogs and cats, but it's not normal. It requires surgical removal; it shouldn't be kept. How do you know if your dog's testicle is missing? In the case of Chocolate Chip, our handsome French Bulldog, his owner noticed he only had one testicle and brought him to Taling Chan Animal Hospital. Dr. Ae (Dr. Wichayaporn Athikanon) used an ultrasound to locate the missing testicle, which was found hidden in the groin. This condition, where the testicle isn't in the scrotum, is called cryptorchidism...