Dog Cryptorchidism Welfare and Surgery

Cryptorchidism, where one or both testes fail to descend, significantly increases the risk of testicular cancer and torsion, and surgical correction is the recommended welfare intervention.

Key Facts

Cryptorchidism affects approximately 1 to 3 percent of male dogs depending on breed
Retained testes develop testicular neoplasia at a rate up to 13 times higher than scrotal testes
Sertoli cell tumours from retained testes can cause oestrogen-mediated feminisation syndrome
Testicular torsion of a retained abdominal testis is an acute painful emergency
Surgical removal of the retained testis is recommended regardless of the dog future breeding status
The condition has a heritable basis and affected dogs should not be bred from

Welfare Considerations

Cryptorchidism creates ongoing welfare risk through the substantially elevated probability of neoplastic transformation in retained testes. Testicular tumours may cause chronic discomfort, hormonal disruption, and bone marrow suppression in advanced cases. Testicular torsion of a retained testis causes acute severe abdominal pain. Early surgical removal of the retained testis eliminates these risks and is a straightforward welfare-improving intervention. Owners who choose not to neuter cryptorchid dogs due to cost or reluctance are accepting avoidable welfare risks for their animals.

What You Can Do

Have cryptorchid dogs neutered early to remove the retained testis before neoplastic transformation
Do not breed from cryptorchid males or their close relatives to reduce heritable prevalence
Monitor intact cryptorchid dogs closely for signs of testicular tumour or torsion requiring urgent surgery
Seek emergency veterinary care if your cryptorchid dog shows acute abdominal pain or feminisation signs
Support breed health registers that record cryptorchidism prevalence and encourage selection against it