My Cardigan is 4 1/2 months old and still only has one descended testicle. The vet said he would rather not neuter him until the other one drops because if he were to neuter him now, he would have to go into the abdomen and locate the other testicle which ends up being a more complicated surgery and more discomfort for the dog. He said if it hasn’t dropped by 1 year of age, he will have to go in and find it. Has anyone else encountered this problem? I think he called is chryptorchidism and he said it's relatively common but I've never known anyone who has had this happen to their dog. I'd rather not wait a year to have him neutered but if it will minimize his discomfort and recovery time then I will.