Cryptorchidism in dogs

January 25, 2026

The pictures show the huge testicular tumor of a 13-year-old cryptorchid male dog, which we had to surgically remove from the abdominal cavity. The brave patient survived the operation well and was released in the evening.

In cryptorchids, the testicles, which are initially located in the kidney area of the embryo, are stuck either in the abdominal cavity (abdominal cryptorchid) or in the groin (inguinal cryptorchid) on their way into the scrotum.

In general, cryptorchidism is detected by the breeder, but at the latest by the vet during the initial examination. Cryptorchid testicles have an increased risk of tumorious degeneration, as in our example. A twisting (torsion) of the testicular suspension bands and blood vessels can also occur, with an acute risk to life. Cryptorchidism in dogs

So when is the right time to have a young dog castrated? There are studies in which microscopic changes in cryptorchid testicles have been identified after just one to two years. We recommend that you have your little friend castrated as soon as they reach sexual maturity, but no later than when they reach the age of 2.

Do you perhaps also have someone like that at home and never knew when and whether the problem should be addressed? We would also be happy to personally advise you on this topic.