Neutering NOT Org

Why Canine Companions Should NOT Be Castrated

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Mature Subject Warning

This website contains subject matter that may not be suitable for all ages. Discussed, herein, are the ethics and health concerns of sexually mutilating canine companions. Mature sexual language and anatomical imagery are presented. If you are under 17 years of age, please consult your parent or legal guardian as to whether or not you should be perusing this website. Thank you.

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Canine Mating Behavior

Domestic canines are selectively bred Wolves (Canis lupus). A domestic canine's courtship and mating behavior, when not interfered with by human beings, remains remarkably similar to their wild canine counterpart. For this reason here is explained how Wolves behave during the courtship and mating process, in order to give insight into original instinct and natural social urges doing their work.

Wolves, both male and female often disperse from their birth pack and wander on their own until the opportunity or urge to take a mate presents itself. Also, a lone male may wander on a pack's periphery until he is able to lure away a young female and seduce her... or the female will wander off to tempt him. In whatever way dog meets bitch, the greeting ritual is usually tense. Violence is possible when unintroduced Wolves meet each other for the first time. There is a degree of distrust and suspicion on both sides. When seducing a female away from her pack there is always the possibility that pack's alpha dog might take exception to a strange male in his territory and strike out against him before daughter and suitor can properly meet.

Upon greeting, both Wolves stand tensely shoulder to shoulder, with fur bristled, tails out and wagging, and ears erect as they venture a sniff of each other's nose and muzzle. As they get to know each other better there may be some play posturing; bowing, pouncing, leaning into, and then tail, genital, and anal sniffing. This progresses into romping, running, licking, and nuzzling, by which time the greeting phase is done and courtship begins.

Courtship is a bonding phase whereby a bitch and dog get to know each other intimately and a mutual emotional attachment develops. This bond may become so strong that the pair will become mates for life. However, unlike the romanticism anthropomorphized by human beings, lifetime relationships are more a thing of opportunity than absolute. Many things can happen in the wilderness to push even the most mutually dedicated lovers apart; such as rivalry between Wolves, injury, illness, or death by any number of causes. As courting progresses there comes playful attempts to mount from the front or side, mutual licking of muzzle, anus, and genitals, parallel running which includes nuzzling under the other Wolf's jaw or ear, and the sideways pricking of the ears sideways while in each other's presence.

If she hasn't already, the bitch eventually enters a period of bleeding and frequent urination called proestrus, which lasts for 7 to 10 days during which her vulva will swell significantly. Following proestrus she will enter actual estrus and blood may be replaced by a clear or yellowish discharge having a very erotic effect on the male; it may smell like rotten meat to humans. Nuzzling or sniffing the croup of the tail while in estrus may cause her to flag; that is, lift her tail up to the side and assuming the "lordosis" posture to encourage mounting, intromission, and coitus. Estrus lasts 4 to 7 days during which time the bitch is insistent that her dog mate with her over and over as often as possible. The final stage of estrus is called diestrus, and like proestrus lasts 7 to 10 days. During diestrus the bitch will be unreceptive to mating and may sit down or get grumpy with the dog if he attempts to mount her.

During and after mating the dog and bitch will spend much time, cuddling, playing, and hunting together, until seven or eight weeks have passed when the bitch loses interest in her mate for a while as she prepares the den and whelps their litter of pups 61 to 63 days after conception.

Wolves only mate once a year, in the wintertime. Domestic canines may enter estrus two or three times a year.



For complete canine breeding information see "Canine Breeding and Reproduction" Presented by

"Tied" (Coitus)

Tied Wolves (Coitus)

Tied German Shepherds (Coitus)
Male Canine Reproductive Anatomy

The male genitalia consist of a fur covered scrotum composed of thin, dark colored skin. The scrotum contains the testicles and has developed to keep them cooler than the internal body temperature to allow for production of spermatozoa (You may like to read about spermiogenesis elsewhere for more about this process.). From the scrotum extending along the lower belly is the prepuce; this is commonly called the sheath. The prepuce is a fold of fur covered flesh that protects the penis. The penis is a highly sensative fleshy organ that extends from the sheath as it fills with blood during sexual arousal. The penis is used to penetrate and insiminate the female during copulation. The canine penis contains a bone called the Baculum Bacula; also called the OS Penis, which aids in penetrating the female's vulva. When canines copulate the male's erection occurs after penetration; rather then before, as with human beings. Toward the base of the penis is the bulbus glandis; commonly called the knot. The bulbus glandis swells into the female's vagina in order to tie the male and female together during coitus. The ability to "tie" prevents the mating pair from parting until after insemination has taken place.

In addition to mating function and urination, the penis is also a scent gland, used in scent marking. It is believed that canine urine contains a pheromone, or scent, unique to the individual animal and that other canines smelling this mark can identify the animal from which it originated.

In wild canines a male's testicles tend to shrink when out of mating season, accompanied by the loss of sexual appetite. This rarely happens with domestic dogs, however, as domestic bitches enter estrus at random times throughout the year.

Female Canine Reproductive Anatomy And Copulation

Female canine genitalia are for the most part internal. The external labium (lips) of the vulva occupies approximately the same physical location on the body as the scrotum does on a male canid. When the bitch enters estrus, the vulva becomes hot and puffy; hence the term "in heat". This puffy/swelling, along with the pheromones produced in the vagina during estrus, this makes the female attractive to males and is when the bitch is physically ready to mate.

The bitch's puffy vulva is shaped so that the tip of the dog's penis easily hooks into its hood to be directed up into the vagina. During copulation the male rapidly thrusts his penis into the female's vagina. At this point the penis is still not erect; the OS penis makes the dog's penis firm enough to penetrate the bitch without an erection. The dog shifts his weight from one leg to the other while thrusting his penis into the bitch's vagina. The dog will buck until he has driven the bulbus glandis potion of his penis deep into the bitch. Once penetration is fully achieved the male's penis is in position it fills with blood, expanding the bulbus glandis, and tying the male's penis into the female's cervix. The bitch's vagina may undulate to help stimulate the dog to erection to achieve coitus.

Once coitus is achieved, the female's vaginal sphincter muscles tighten around the male's bulbus glandis to hold it firm as she pulls away forward, triggering the dog's ejaculation of semen into her uterus. In the initial 30-50 seconds of the tie, the male deposits only clear seminal fluid. Once actual orgasm is achieved, a cloudy, somewhat thicker, sperm bearing semen is ejaculated. After insemination takes maybe 30 seconds to a minute, after which the ejaculate returns to a clear state and continues to pump forth until the tie breaks. The canines may remain tied for from 5 to35 minutes.

Canine Vulva In Estrus Aroused Canine Penis
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Last Revised May 10, 2013.
Copyright ©2007-2017 J.E. Greathouse

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