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***Vulpine Anatomy (Reproduction Part 1)***
Sex Scents and Chemicals
NOTE: This act contains some adult content and sexual references, so if you don't want to read any of this stuff, please click on your browser's back button (or a different link)

Every Vulpine upon reaching sexual maturity gradually develops a strong desire to yiff and pass on their genetic information to another generation.  Most Vulpines telegraph their fertility through sex scents.  In addition to this, Vulpine females also produce special chemicals that increase the chances of reproductive success.  This section will explain what types of sex scents and chemicals Vulpine species have.
Sex Scents
Males: Most vulpine males produce scents to attract a female.  The scents that they produce are generally similar to cologne...however, they do also contain pheromones, which is the primary ingredient in their sex scent.
Where males have their sex scent glands: Almost all males have their scent glands inside their upper chest (underneath their chest fur).  Foxes, coyotes, wolves, German Shepherds, Collies, and Huskies also have scent glands in the tips of their tails.  However, these are not nearly as big or powerful as in females (I will explain further in a little bit).  Collared foxes and Alpha Golden Foxes have the strongest sex scents.  Dolphins, Orcas and Seals do not have scent glands (because they don't really need them).
Females: Most Vulpine females produce very strong sex scents that can be detected for long distances.  In fact, a female's sex scent will almost always overpower a male's (except when the male is a collared fox or an alpha golden fox).  Female sex scents contain several pheromones and a couple of chemicals to further stimulate the male's desire to yiff and reproduce.
Where females have their scent glands
> Vixens, wolves, coyotes, German Shepherds, Collies, and Huskies: Their sex scent gland is located inside their tails and is far larger than their male counterparts.  In fact, the scent gland in a vixen's tail is roughly the size of a football (of course, it depends on tail size and thickness).  Collared vixens also have some sex scent in their collar.  At this time it is unknown how they produce this sex scent since it is not attached to a sex scent gland.
> All other canine females: Their sex scents are contained in their chest fur around the breasts.
> Minks, Squirrels, and Mares: they have a scent gland inside their abdomen, located above their uterus which has tubes running from it to their tail.  Then the scent is released from the solid part of their tail into their tail fur.  Sometimes the supply tubes get closed during pregnancy, preventing the sex scent from escaping.
> Rabbits, Hamsters, and Pandas: The entire fleshy part of their tail is their sex scent gland (usually about the size of a softball).  The scent is transferred to their tail fur after that.
> Raccoons and Pandacoons: Like vixens, they have a large (though considerably weaker than a vixen's) sex scent gland in their tails.
> All other species: They have tiny sex scents spread throughout their entire bodies.  Each individual gland is very weak, but together they reinforce the scent.
Canine females (particularly collared vixens and rare breed vixens*) have the strongest sex scents.  Dolphins, orcas and seals do not have sex scent glands for obvious reasons.
Sex-related Chemicals
"Love Glue" (found in rodent males, most potent in rabbits)
Function: Binds to vaginal, cervical, and uterine walls, causing the male to be able to plug a female's reproductive tract to prevent other males from trying to impregnate the same female.
Hyper-Testosterone (found in minks, some rabbits, and some bucks)
Function: Causes the male to yiff a female constantly and wildly, often having a number of climaxes during the process.  However, it can potentially be harmful to the female if he's too wild and/or too big for her.
Chemical 41-alpha (found in all canine males...located inside the knot)
Function: Reacts with the female chemical 41-beta to cause the males knot to grow rapidly to its maximum size.
Chemical 41-gamma (found in all canine males...located inside the knot)
Function: Once the knot is fully-developed, the knot will release this chemical, helping to draw the female's vaginal walls as tight as possible to lock the knot in place for the tie.
Chemical 41-delta (found in 1 out of 1 billion canine males)
Function: Released by the knot when fully grown, it acts as a binding agent between the knot and the female's vaginal walls.  This significantly lengthens the duration of the tie.
Chemical 75-alpha (found in all canine males, raccoons, stallions, bucks, and all other males with any DNA from the aforementioned species)
Function: Enables the male to detect a female's pheromones.
Chemical 41-beta (all Vulpine females, some Vulpes-born human females)
Function: Causes the knot of a canine male's penis to expand rapidly to full-size, enabiling the male to tie the female (in most cases)
Attraction Pheromone (all Vulpine females, most human females)
Function: Draws potential mates to the female when she is looking for one.
Yiff Pheromone (all Vulpine females, a few Vulpes-born human females)
Function: Tells a male that she's ready to be yiffed
Fertility Pheromone (Collared Vixens, Blue Vixens, Pure White Mousettes, Fire Vixens, Alpha Golden Vixens, Mares)
Function: Tells a male when a female is at her most fertile.
Chemical 54-alpha (Fire Mousettes)
Function: Causes the tip of her tail to ignite into a ball of fire during yiff.  WARNING: Males should avoid the tip of her tail since it can burn in excess of 600 degrees.  Fire Mousettes are immune to the intense heat
Chemical 54-beta (Arctic Mousettes)
Function: Causes the crystal-tipped tail to change color from blue to pink to red as she becomes more sexually aroused during yiff.
Chemical 85-alpha (all canine females and females w/canine reproductive characteristics)
Function: Causes the opening of a canine female's vulva to swell to several times it's normal size and become dark purple in color.  Another indicator of her receptivity.
Chemical 85-beta (all canine females and females w/canine reproductive characteristics)
Function: This only occurs during the mating season, causes the insides of a female's vagina to become extremely hot (generally from 110 to 120 degrees**)
Chemical 85-gamma (Fire Vixens, Fire Mousettes, and Blue Vixens)
Function: Because of the intense heat of these female's vaginal walls, these females produce a chemical that allows the male to safely yiff them without getting burned.
Chemical 85-delta (Fire Vixens, Fire Mousettes, and Blue Vixens)
Function: During pregnancy, this chemical is pumped throughout her reproductive tract, keeping the temperature inside her womb comfortable for the developing offspring.  This chemical also prevents these females from having human offspring.
End of Act 10

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*: Alpha Golden Vixens, Blue Vixens and Fire Vixens
**: The normal temperature of the inside of a canine female's vagina outside of mating season is 100-105 degrees.