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The C-Files
Episode 7-15
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Intraspecies Relationships
***Domestic Dog Couples*** 

As on Earth there are multiple breeds of domestic dogs on Vulpes, however only a handful of the breeds known to Earth exist on Vulpes.  In any case, in most cases the stuff that is mentioned in this section applies to all domestic dogs (regardless of breed), though there are a few exceptions
Relationship Traits
How male and female dogs usually meet: Like most canine species, dogs are generally very playful as pups.  Male pups also tend to be quite adventurous during their developmental years, doing some things that many other Vulpines wouldn't.  Female pups are generally more reserved, and sometimes think of what the male pups do as acting immature.  However male and female pups do have a couple of things in common.  They are both usually friendly in nature, and they both seek the affection of another.  Most relationships between domestic dog couples don't start until around sexual maturity when a female sees a male that she likes and coaxes him out of his adventurous and sometimes risky behavior.
Developing a meaningful relationship: Once the male has settled down somewhat, the female is usually willing to begin dating him.  Female domestic dogs are usually more reserved as far as their yiff drive is concerned and many wait as long as possible before allowing a male to yiff them.  Naturally, the male usually will want to yiff with a female as soon as he can, but the female will often refuse.  If the male is to have any chance of yiffing the female, he has to learn how to be patient as well as become more emotionally attached to his potential mate.  Most of the time, when a male dog wants something bad enough, he is willing to work hard for it and will not stop until he finally gets what he is after.  This is effective in making the male more sensitive towards his potential mate, fostering the natural friendly demeanor that all domestic dogs have.  By the time the female will finally allow the male to yiff her, the couple will often be together for several years and in many cases be married or engaged to be married.
It is important to note however that not all female domestic dogs behave in the same way*.  About 1 in 50 females has a hyperactive yiff drive, which causes them to be more easily convinced to yiff.  These females have some control over their yiff drive, but usually not enough to hold back their yiffy desires long enough to develop a long-term relationship with a male.  In addition, about 1 in 50,000 German Shepherd and Husky females have a yiff drive so intense that they will either have to have their ovaries removed to prevent pregnancy-related problems down the road (since these females will breed CONSTANTLY) or they will have to remain single for the rest of their lives**.
Special Emotional Traits: Their are a couple of traits that male and female dogs use to show their emotions to a potential mate.

1. The "ear tug": Dogs (and all other canines) will occasionally gently tug on the ear of their partner with their teeth.  Dogs also do this with non-canine species every now and then, but usually keep it amongst themselves and other canines.
2. Variable temperature tongues: Dogs (and all other canines) have tongues that can change temperature to suit a certain emotional state.  Usually, only female dogs have this ability and they don't develop it until they are sexually mature.  The tongue has essentially two different temperature levels.

Warm and Friendly: This is true about 99% of the time.  At this stage, it usually means that a dog is in a normal mood and not feeling overly yiffy.  When a dog tongue kisses another, the tongue feels warm and soothing with only a little amount of moisture.
Hot and Spicy: This is predominately reserved for females and usually only occurs during the winter months (mating season).  At this stage, the female is usually in heat and in the mood to yiff.  She can be extremely playful and passionate at this time, especially towards a male that she likes.  Her tongue feels very warm and moist when she uses it to lick males to get them to want to yiff her.  Most of the time, it works rather quickly.

It is important to note that all dogs have a third setting which is a combination of the two previous settings.  This "Hot and Friendly" setting is common in couples with young pups (generally less than 3 years old).  The warmer tongue is supposed to give the young pups the feeling that their parents love them and it helps them grow faster and stronger.
Mating Season: Twice (Primary: Jan-Mar; Secondary: July and August)
Male dog reproductive characteristics: A male dog's penis can change temperature from its normal range (around 100 degrees) to the mating season range (usually 110 to 115 degrees).  In addition, like all canines, male dogs have a knot near the sheath that reacts to vaginal juices while inside a female.  When it is at normal size, the typical knot is about the size of a golfball, but usually grows to be about twice that size when fully grown.
Female dog reproductive characteristics: When a female is sexually interested in a male, her vulva will swell to double its normal size.  During mating season, the swelling is even greater (in some cases the vulva can swell 3 to 4x its normal size), also during the mating season, the vulva will also darken, becoming a purplish color with brighter pink spots around the opening to her vagina.  Internally, the vaginal walls become very hot (around 105 degrees most of the year, 110 to 120 degrees during mating season).
The yiffy experience: 99% of the time, the male dog will mount the female from behind and yiff her doggy-style (naturally).  Once the couple is excited enough, the male will put his knot inside his mate and will let it grow while the female clamps down on it with her vaginal walls.  Eventually, the knot will become locked inside the female and unable to be removed until the male finishes inseminating her.  As soon as the male is locked inside a female, he will dismount her and turn around facing opposite directions, resulting in the copulatory tie that is a trademark of all canine species.  During the tie (which usually lasts between 20-40 minutes) the male will slowly and leisurely inseminate the female until his biological urges have been satisfied and the couple can break free from the tie.
Male Domestic Dogs
> Typical sperm count per yiffy encounter: 1 to 3 billion
> Typical "batting average"***: about 20%
> Average time needed for recovery between yiffy encounters: 1 to 2 hours
> Average age of reaching sexual maturity: 13
> Average age of first sexual encounter*: 16
Female Domestic Dogs
> Average number of egg cells released during yiff (if any): 6-12
> Average litter size: 4-8
> Maximum litter size: 10-15 (depending on breed)
> Typical number of litters a female dog will give birth to in her lifetime: 2 to 4
> Gestation: About 9 weeks
> Average age of reaching sexual maturity: 12
> Average age of first sexual encounter*: 17
Parental Roles
Domestic dog couples that have families are strongly bonded together (mainly as a result of the copulatory tie...each time they are tied together, the stronger their relationship gets).  Both parents play significant roles in raising the pups (usually the pups will bond strongest with the parent of opposite gender**).
Typical Male Dog Parental Role: Male domestic dogs are the most emotional of all canine species to the pups.  They will often nuzzle and play with the pups on a regular basis.  In addition, male dogs also teach the pups (particularly the male pups) how to do certain things for themselves.
Typical Female Dog Parental Role: In addition to the traditional maternal roles, female domestic dogs are also quite emotional with their pups.  They don't play with them as much as the father does, but they make up for it by giving them lots of nuzzles, hugs, etc.  Female domestic dogs also try to educate their pups as best as they can.

It is also important to note that whenever necessary male and female domestic dogs will work together to defend their family...violently if need be.
Overall: Most domestic dog couples are closely knit and share responisibilites as evenly as possible with few or no problems.  Collie and Husky couples usually share the strongest bonds while German Shepherd couples tend to struggle a bit (at least sometimes).
Overall strength of relationship (on a 0-10 scale*)...Most breeds: 8
Overall strength of relationship (Collies only): 9.5
Overall strength of relationship (Huskies only): 9
Overall strength of relationship (German Shepherds only): 7

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*: Of course, there are occassions that a normal female just doesn't want to wait to be yiffed.
**: These females will yiff with almost any viable male and produce litter after litter with little recovery time in between.  If untreated, these females rarely live past 35.
***: Batting average = approximate amount of sperm cells that make it to a female's fallopian tubes while still having a chance to fertilize any available egg cells.
*: Remember, on Vulpes, Vulpines are considered adults at 16.  High school age teens that have not yet reached official adulthood are allowed to yiff as long as the parents of both individuals consent and the couple uses contraception (it is required by law that all 14 and 15 year olds that do yiff between each other to use contraception)
**: Sons usually bond to their mother while daughters usually bond to their father.
*: Using this scale 0 = Impossible (Male and Female too hostile to be together), 5 = Average, 10 = Inseperable (Male and Female are extremely close and wouldn't want to be apart for any reason...not even death).