Teach you how to understand the dog s reproductive system? An introduction to the dog s reproductive system!

The testicles of dogs are small, located in the scrotum, one on the left and right, and are oval in shape. They are the organs that produce sperm and androgens. During the breeding period, the testicles are enlarged, elastic, and have a strong function, and can produce a large amount of sperm.

In the erotic period, the testicles become smaller and harder, and do not have the ability to reproduce. The role of androgens is to promote the development and maturity of reproductive organs and maintain normal reproductive activities. Lack of androgens will lead to dysplasia of the reproductive organs and the loss of desire and ability to reproductive activities.

The epididymis is a place for storing sperm and makes it possible to achieve physiological maturity and omit it, thus having the ability to fertilize the egg. The vas deferens is the duct that delivers sperm. The urinary tract is a common channel for urine excretion and ejaculation. The paragonadal gland refers to the prostate. Dogs do not have seminal vesicles and urethral bulbs. The secretions of the prostate have the effect of giving sperm nutrition and enhancing sperm vitality. The penis structure of the dog is relatively special. First, it has a penis bone about 8 to 10 cm long; second, there are two very developed sponges at the root of the penis. During mating, the sponges are congested and expanded, and stuck in the pubic joint of the female dog, making the penis unable to be pulled out and become embolized.