• 1 0 'The 'Dog's Knot', or medically termed as the Bulbus Glandis is a tissue in the structure of canine animal's penis'. When the dog mates, this tissue swells in order to sort of 'latch' on to the female dog to prevent his penis from slipping out of her.
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• It was my first. Hadn’t even had a human yet. It was also embarrassing because my friend was there guiding me. I remember thinking how hot (temperature wise) it felt and how big it felt. Especially when I felt the knot. It was a German shepherd, not the biggest knot, not the smallest. But when I came on the knot, I knew it was.

When dogs become stuck together, it is called 'tied.' The base of the male dog's penis swells to a large size. This is called a knot. In larger breeds, the knot can swell to the size of a tennis ball.

See files for Dogs

Dog reproduction is a complex process that usually begins with the courtship. Both male and female emit signals to let the other know they are prepared for mating and consequent copulation. Once they have finished mating, we can observe that the male dismounts the female but the penis is inside of the vagina, with both dogs still together. It is at this point when we wonder why this happens and if we should separate them or, on the contrary, they do it naturally.

In this AnimalWised article we will respond to these and more questions, solving the cause that explains why dogs get stuck when mating, read on!

The reproductive system of the male dog

In order to understand why dogs get stuck when mating more easily, it is essential to do a brief review of the anatomy of the reproductive system of the male and the female. Thus, the dog's internal and external apparatus consists of the following parts:

• Scrotum: the scrotal sac is responsible for protecting and maintaining a proper temperature in the dog's testicles. It is also the visible part of the male canine reproductive system.
• Testicles: located within the scrotum, their function is to produce both sperm and male hormones such as testosterone. They have an ovulate shape, are located in a horizontal position and they tend to be symmetrical.
• Epididymides: located on both testicles, they are the tubes responsible for storing and transporting sperm to the vas deferens. These tubes are composed of a head, body and tail.
• Vas deferens: it starts at the tail of the epididymis and has the function of transporting the sperm into the prostate.
• Prostate: this gland surrounds the neck of the bladder and the beginning of the urethra. Its size varies from breed to breed. Its function is to generate a substance called prostate fluid or seminal plasma for easy transportation of spermatozoa. it also nourishes them.
• Urethra: this conduit not only transports urine from the dog's bladder, but is also part of the canine reproductive system transporting sperm and prostatic fluid for final ejaculation.
• Foreskin(prepuce):this is the fold of skin covering the penis to protect and lubricate it. The second function of the foreskin is its ability to produce a liquid called smegma, which is greenish, for this purpose.
• Penis: in its unaroused state it is in the inside of the foreskin. When the dog feels excited, he begins the erection and, consequently, the appearance of the penis is outwards. It consists of the penile bone, which allows penetration, and the penile bulb, a ventral groove which allows the so called ‘knotting’.

The reproductive system of the female dog

As it is the case with the male genitals, the female dog's reproductive system consists of internal and external organs. It is the shape of these organs which lead to dogs getting stuck together after mating. Therefore we will briefly explain the function of each of part:

• Ovaries: with an oval form, they have a similar function as the testicles in males. They produce ovules and female hormones such as estrogen. As with the male prostate, the size of the ovaries may vary depending on the breed.
• Oviducts: these tubes in each of the ovaries have the function of moving move the egg to the uterine horn.
• Uterine Horn: two tubes that carry the eggs to the body of the uterus if they have been fertilized by the sperm.
• Uterus: it is here where the nidation (implanting of an embryo) of the zygotes takes place to become embryos, fetuses and, subsequently, puppies.
• Vagina: not to be confused with the vulva, the vagina is the internal organ and the vulva the external. In the dog, it lies between the neck of the uterus and the vaginal vestibule, being the place in which the intercourse takes place.
• Vaginal vestibule: located between the vagina and the vulva, it allows penetration during mating.
• Clitoris: as with human females, the function of this organ is to produce pleasure or sexual stimulation to the dog. in turn this helps to encourage fertilization.
• Vulva: as we stated above, it is the dog's external sex organ, and is changes size during the mating period.

Stuck To Dogs Knotting

What causes dogs getting stuck together after mating?

Once penetration has been produced, the male tends to ‘dismount’ the female, but stays attached. The dog will likely turn around to face the opposite direction, but getting stuck means they can't go anywhere. This leads the guardians of both animals to wonder why the dogs have been stuck after mating and how to separate them. This happens because the dog's ejaculation occurs in three phases:

1. Urethral phase: this takes place during the beginning of the penetration, and therein the dog first ejects a liquid free of sperm. Penetration does not occur due to an engorded penis, but the baculum, also known as the penis bone.
2. Sperm phase: after the first ejaculation, the animal completes engorgement and starts a second ejaculation, this time with sperm. During this process, there is an increase in penile bulb size due to venous compression of the penis and consequent blood concentration. At this point, the male turns around and dismounts the female, leaving the dogs stuck.
3. Prostatic phase: while the male has already removed the penis from the female, copulation has not ended, as once the dog has turned away, the so-called ‘knotting’ occurs. This is also known as the copulation tie. The penile bulb remains engorged in the vagina. The expulsion of the third ejaculation has a much lower number of sperm than the last. Once the bulb relaxes and recovers its normal state, the dogs are unstuck.

In total, the intercourse can last between 20 to 60 minutes, 30 being the usual average.

This way, once the three phases of the ejaculation of the male have been reviewed, we see how the copulation tie gives us the answer to the question why dogs get stuck when mating. The expansion of the penile bulb locks the male into the female. The size it becomes means it cannot pass through the vaginal vestibule, which closes precisely to ensure this fact and avoid damage to the female.

Should I break two dogs stuck together during mating?

If you have understood the above reason for dogs getting stuck together, you will know trying to break them apart is dangerous. The dog's female and male anatomy do not allow removal of the penis before the end of the dog's third ejaculation. If you separate them forcefully, both animals would be wounded and harmed. Not only would intercourse would not come to its end, but you could serious rupture their sexual organs. The animals need to carry out their natural mating process, allowing them a relaxed and comfortable atmosphere.

It is common to hear the female issue sounds similar to crying. It is possible she will growl and bark. However, even though we may want to spare her any pain, trying to break them apart after getting stuck can cause the dogs even greater pain. It is most advisable not to boost their stress levels and let them separate from each other naturally.

Once the intercourse has ended, if the eggs have been fertilized and the dog becomes pregnant, it will be necessary to provide her with the best level of care. To help provide said care, we recommend the following articles:

Stuck To Dogs Knot Video

If you want to know more about dogs getting stuck together while mating, we have also created this video to help you better understand the process:

If you want to read similar articles to Why do Dogs Get Stuck when Mating?, we recommend you visit our Facts about the animal kingdom category.

• Valera, M.A. (n.d.) Canine Reproduction. Centaur veterinary polyclinic: Alcorcón.
• Gradil, C. M., Yeager, A., & Concannon, P.W. (2006). Assessment of of the canine male reproductive problems. IVIS.
• Xiomara, L. (2006). Seminal extraction in the dog. Spanish Specialist Veterinary Association of Small Animals, 26(4), 380-381.

See files for Dogs

Dog reproduction is a complex process that usually begins with the courtship. Both male and female emit signals to let the other know they are prepared for mating and consequent copulation. Once they have finished mating, we can observe that the male dismounts the female but the penis is inside of the vagina, with both dogs still together. It is at this point when we wonder why this happens and if we should separate them or, on the contrary, they do it naturally.

In this AnimalWised article we will respond to these and more questions, solving the cause that explains why dogs get stuck when mating, read on!

Stuck To Dogs Knot Bracelet

The reproductive system of the male dog

In order to understand why dogs get stuck when mating more easily, it is essential to do a brief review of the anatomy of the reproductive system of the male and the female. Thus, the dog's internal and external apparatus consists of the following parts:

• Scrotum: the scrotal sac is responsible for protecting and maintaining a proper temperature in the dog's testicles. It is also the visible part of the male canine reproductive system.
• Testicles: located within the scrotum, their function is to produce both sperm and male hormones such as testosterone. They have an ovulate shape, are located in a horizontal position and they tend to be symmetrical.
• Epididymides: located on both testicles, they are the tubes responsible for storing and transporting sperm to the vas deferens. These tubes are composed of a head, body and tail.
• Vas deferens: it starts at the tail of the epididymis and has the function of transporting the sperm into the prostate.
• Prostate: this gland surrounds the neck of the bladder and the beginning of the urethra. Its size varies from breed to breed. Its function is to generate a substance called prostate fluid or seminal plasma for easy transportation of spermatozoa. it also nourishes them.
• Urethra: this conduit not only transports urine from the dog's bladder, but is also part of the canine reproductive system transporting sperm and prostatic fluid for final ejaculation.
• Foreskin(prepuce):this is the fold of skin covering the penis to protect and lubricate it. The second function of the foreskin is its ability to produce a liquid called smegma, which is greenish, for this purpose.
• Penis: in its unaroused state it is in the inside of the foreskin. When the dog feels excited, he begins the erection and, consequently, the appearance of the penis is outwards. It consists of the penile bone, which allows penetration, and the penile bulb, a ventral groove which allows the so called ‘knotting’.

The reproductive system of the female dog

As it is the case with the male genitals, the female dog's reproductive system consists of internal and external organs. It is the shape of these organs which lead to dogs getting stuck together after mating. Therefore we will briefly explain the function of each of part:

• Ovaries: with an oval form, they have a similar function as the testicles in males. They produce ovules and female hormones such as estrogen. As with the male prostate, the size of the ovaries may vary depending on the breed.
• Oviducts: these tubes in each of the ovaries have the function of moving move the egg to the uterine horn.
• Uterine Horn: two tubes that carry the eggs to the body of the uterus if they have been fertilized by the sperm.
• Uterus: it is here where the nidation (implanting of an embryo) of the zygotes takes place to become embryos, fetuses and, subsequently, puppies.
• Vagina: not to be confused with the vulva, the vagina is the internal organ and the vulva the external. In the dog, it lies between the neck of the uterus and the vaginal vestibule, being the place in which the intercourse takes place.
• Vaginal vestibule: located between the vagina and the vulva, it allows penetration during mating.
• Clitoris: as with human females, the function of this organ is to produce pleasure or sexual stimulation to the dog. in turn this helps to encourage fertilization.
• Vulva: as we stated above, it is the dog's external sex organ, and is changes size during the mating period.

What causes dogs getting stuck together after mating?

Once penetration has been produced, the male tends to ‘dismount’ the female, but stays attached. The dog will likely turn around to face the opposite direction, but getting stuck means they can't go anywhere. This leads the guardians of both animals to wonder why the dogs have been stuck after mating and how to separate them. This happens because the dog's ejaculation occurs in three phases:

1. Urethral phase: this takes place during the beginning of the penetration, and therein the dog first ejects a liquid free of sperm. Penetration does not occur due to an engorded penis, but the baculum, also known as the penis bone.
2. Sperm phase: after the first ejaculation, the animal completes engorgement and starts a second ejaculation, this time with sperm. During this process, there is an increase in penile bulb size due to venous compression of the penis and consequent blood concentration. At this point, the male turns around and dismounts the female, leaving the dogs stuck.
3. Prostatic phase: while the male has already removed the penis from the female, copulation has not ended, as once the dog has turned away, the so-called ‘knotting’ occurs. This is also known as the copulation tie. The penile bulb remains engorged in the vagina. The expulsion of the third ejaculation has a much lower number of sperm than the last. Once the bulb relaxes and recovers its normal state, the dogs are unstuck.

Stuck Dog Knots

In total, the intercourse can last between 20 to 60 minutes, 30 being the usual average.

This way, once the three phases of the ejaculation of the male have been reviewed, we see how the copulation tie gives us the answer to the question why dogs get stuck when mating. The expansion of the penile bulb locks the male into the female. The size it becomes means it cannot pass through the vaginal vestibule, which closes precisely to ensure this fact and avoid damage to the female.

Should I break two dogs stuck together during mating?

If you have understood the above reason for dogs getting stuck together, you will know trying to break them apart is dangerous. The dog's female and male anatomy do not allow removal of the penis before the end of the dog's third ejaculation. If you separate them forcefully, both animals would be wounded and harmed. Not only would intercourse would not come to its end, but you could serious rupture their sexual organs. The animals need to carry out their natural mating process, allowing them a relaxed and comfortable atmosphere.

It is common to hear the female issue sounds similar to crying. It is possible she will growl and bark. However, even though we may want to spare her any pain, trying to break them apart after getting stuck can cause the dogs even greater pain. It is most advisable not to boost their stress levels and let them separate from each other naturally.

Once the intercourse has ended, if the eggs have been fertilized and the dog becomes pregnant, it will be necessary to provide her with the best level of care. To help provide said care, we recommend the following articles:

If you want to know more about dogs getting stuck together while mating, we have also created this video to help you better understand the process:

Stuck To Dogs Knot Quilt Pattern

If you want to read similar articles to Why do Dogs Get Stuck when Mating?, we recommend you visit our Facts about the animal kingdom category.

Stuck To Dogs Knot Ring

• Valera, M.A. (n.d.) Canine Reproduction. Centaur veterinary polyclinic: Alcorcón.
• Gradil, C. M., Yeager, A., & Concannon, P.W. (2006). Assessment of of the canine male reproductive problems. IVIS.
• Xiomara, L. (2006). Seminal extraction in the dog. Spanish Specialist Veterinary Association of Small Animals, 26(4), 380-381.