Cryptorchidism in dogs can usually be diagnosed when they are 8 weeks old, so it is best to wait until the dog has cryptorchidism for two months before having cryptorchidism surgery. Surgery can also be performed when a dog is found to have cryptorchidism. Before surgery, just make sure the dog is healthy and has been vaccinated. When a dog's cryptorchidism is discovered, surgery must be performed, otherwise the cryptorchidism will develop, and in severe cases, it may become cancerous, causing life-threatening consequences.