This is divided into different sizes. The average dog is about 8 to 10 centimeters. Large dogs can reach about 15 cm.
For example, Labrador is a large dog. Therefore, its reproductive organs are larger than those of small and medium-sized dogs, but its specific size It is related to individual development and the owner can measure it by himself. If the owner is going to breed the Labrador, he needs to observe whether the dog's testicles descend into the scrotum normally, and try to breed the dog after the dog reaches physical maturity.
