In creating the Pern setting, McCaffrey set out to subvert the clichés associated with dragons in European folklore and in modern fantasy fiction. Pernese dragons are similar to traditional Western dragons in the fact that they can breathe fire and resemble great lizards or dinosaurs with wings, but the resemblance ends there. Unlike most dragons in previous Western literature, Pernese dragons are entirely friendly to humanity. Furthermore, they are not magical at all. Instead, they are a heavily genetically modified species based on one of Pern's native life-forms, the fire lizard.
In Dragonsdawn, the race was intentionally engineered to fight Thread after it first caught the human colonists on Pern unawares, with devastating results. Geneticist Kitti Ping Yung designed the dragons by manipulating the genetic code of the indigenous fire lizards that had been acquired as pets by the colonists. The dragons were named after their resemblance to Western dragons from the legends of old Earth. Later genetic manipulation by Ping's granddaughter, Wind Blossom, also resulted in the watch whers, ungainly, nocturnal creatures who bore a slight resemblance to dragons. The later novels, set during the third pass, have shown the watch whers are more useful than commonly thought in the novels set in the first pass.
Dragons are described as carnivorous, oviparous, warm-blooded creatures. Like all of Pern's native large fauna, they have six limbs - four feet and two wings. Their blood, referred to as ichor, is copper-based and green in color, they have multifaceted eyes that change color depending on the dragon's mood. Their head and general body type is described by McCaffrey as being similar in shape to those of horses. On their heads they have small headknobs, similar to those of giraffes, and no visible ears. Unlike the dragons of Terran legend, they have a smooth hide rather than scales; the texture of their skin is described as being reminiscent of suede with a spicy, sweet scent when clean. They are described as having forked tail ends with a defecation opening between the forks; however, most artistic renderings depict their tails as having spade-shaped tips. The dragons usually get from one place to another by going through a teleportation process known as 'going between'.
Kitti Ping designed the dragons to gradually increase in size with each generation until they reached pre-programmed final dimensions. The dragons of the first Hatchings were not much bigger than horses. By the Sixth Pass (1500 years later) they had reached their programmed size and remained at that size until a single isolated dragon population suffered severe inbreeding, resulting in much larger beasts. In the 9th Pass, when the most of the novels have so far been set, the largest Pernese dragon on record, Ramoth, hatched. According to the novel All the Weyrs of Pern these dragons were roughly three times the size of the largest first-generation dragons. Ramoth's great size is often attributed to mutation and the genetic isolation of Benden Weyr for over 400 years (or Turns). Ramoth, at full length, was forty-five feet (Although the Dragonlover's Guide to Pern, written by Jody Lynn Nye with input from Anne McCaffrey listed it incorrectly as forty-five metres). In All the Weyrs of Pern, AIVAS, an artificial intelligence still in operation after all this time, notes that all of the primary Benden dragons, Ramoth, Mnementh and Canth, are notably larger than Kitti Ping's specified end-size of the dragon species. Newly hatched dragons are the size of very large dogs or small ponies, and reach their full size after eighteen months. Because young dragons grow so fast, their riders must regularly apply oil to their hides to prevent the skin from cracking or drying out, daily bathing in cold water can effect the fingers of the riders chill bane.
Dragons, like their fire lizard ancestors, can breathe fire by chewing a phosphine-bearing rock, called "firestone" in the novels, which reacts with an acid in a special "second stomach" organ. This forms a volatile gas that can be exhaled at will and ignites upon contact with air. The flame is used to burn Thread from the sky before it reaches the ground. However, the chewed firestone must be expelled from the body after it is used up, for the dragons cannot digest it. This is done by regurgitation. If a dragon does not do so (usually because of inexperience), the need becomes so great that they will expel it involuntarily.
A favorite activity of dragons is sunning themselves. They will find a high place to perch that is exposed to sunlight and often spread their wings to catch as much sunlight as possible. A favorite place is even better if a vertical surface is nearby to reflect more light and solar heat. They appear to do this especially after going between. Or snow like in Red Star Rising
Despite their relatively low intelligence, fire-lizards communicate through a form of weak telepathy. They also imprint on the first individual who feeds them after they hatch, creating a telepathic bond with them; the Pernese call this phenomenon "Impression". In creating dragons, Kitti Ping intensified the creatures' telepathy, greatly increased their intelligence, and gave them a strong instinctive drive to Impress to a human. Upon hatching, each dragonet chooses one of the humans present (usually) and Impresses to that person; from that moment on, the pair are in a constant state of telepathic contact for as long as they both live. Dragons also use telepathy to communicate with each other and with fire lizards. They are capable of speaking telepathically to humans besides their own riders, but not all of them will do so except under unusual circumstances. Being spoken to by a dragon when one is not a rider nor a close acquaintance is considered a great honor.
Dragons and fire-lizards can also teleport. They do this by briefly entering a hyperspace dimension known as between. Both humans and dragons experience between as an extremely cold, sensory-deprived, black void. After spending no more than eight seconds in between, the dragon or fire lizard can re-emerge anywhere on Pern, along with any passengers or cargo they carried. This ability is explained as having evolved in fire lizards as a defense against Thread; not only does it allow them to quickly escape from Threadfall, but the intense cold of between kills any Thread that has already burrowed into them. If a dragon attempts to teleport without a clear mental image of the place where they intend to reappear, they may simply fail to emerge from between and thus, be gone forever.
Going between allows dragons to travel through time as well as space, as long as they have a clear picture of what a particular place looked like (or will look like) at the desired time. However, the practice is highly dangerous to both dragon and rider and is severely restricted. Existing in two places at once for extended periods of time, or in close proximity, causes severe weakness and psychological disturbance for humans but not for dragons, the effects of which are discussed in several novels. In addition, while teleporting through space always takes the same amount of time, when a dragon travels through time, the amount of time they spend in between increases depending on how long ago or how far in time the destination is. Thus, traveling to remote times poses severe dangers from hypothermia and oxygen deprivation. In the first Pern novel Dragonflight, Lessa passes out after having travelled back over 400 turns.
Riders are trained to give the dragon the image of their destination, but it is known that there are some that get lazy and let the dragon do the work instead. This is said to sometimes be the cause of accidental time travel.
The Dragonlover's Guide to Pern states that dragons defecate while between. This idea originated with a statement by Anne McCaffrey herself, in answer to a fan's question about the subject at a con. However, McCaffrey may have been joking when she first said this. As the idea has never been referenced in any of the Pern novels, (in fact, defecation was probably only mentioned a scant few times in all of the books ever written in the Pern series.) it cannot be considered definitively canonical. If true, it would eventually cause serious ecological problems for the planet, as large amounts of Pern's organic matter would be regularly disappearing into an alternate dimension, although when dragons and riders die, they go between, and organic matter is also lost. It should be noted that The Skies of Pern references the use of dragon dung as a repellent against the large felines inhabiting the southern continent. Given the energy needed to take something between, It could be that anything taken between will eventually find its way back into normal space, though not necessarily back to Pern.
Dragons are also capable of telekenesis, though this ability is unknown and used in an unconscious manner (to augment flight) until it is discovered as a conscious ability by the green dragon Zaranth and her rider Tai in the 31st turn of the Ninth Pass. It is speculated that the undersized wings were intentionally created in the dragons by Kitti Ping to reduce the surface area of a dragon that is exposed to possible Thread injury, and that the telekenisis was intended to make up for the loss of wingsail. It is said in many books that a dragon is able to carry whatever it thinks it can carry. This is likely an extension of the telekenesis, mentally "lifting" the extra load. This is the most likely explanation as to the great loads that dragons sometimes carry during emergencies.
Unlike their fire lizard ancestors, dragons are fully sapient. They communicate fluently in human language (although only telepathically), and have personalities and opinions distinct from those of their riders. However, their intelligence does seem to be somewhat lower than that of the average human. In particular, their long-term memory is severely limited.
Dragons' telepathic communication is usually limited to contact with their rider and with other dragons, however a dragon sometimes communicates well with a person with whom their rider has close emotional ties. They do understand spoken human language and occasionally reply telepathically to people whom they choose to speak.
As a safeguard against the possible damage that could be caused by such powerful creatures, Ping engineered dragons to be profoundly psychologically dependent on their riders. Any dragonet that fails to Impress to a human shortly after hatching will die. If a dragon's rider dies, the dragon immediately suicides by going between without a destination. The only exception is when the rider of a queen dragon dies while the queen is gravid; the dragon waits just long enough to lay her eggs and see them hatch before disappearing between. (Humans who lose their dragons typically commit suicide as well. However, some do survive, although the experience leaves profound psychological trauma.)
Ping also designed the dragons to be fairly calm in temperament. They never fight one another, unless two queens come into estrus at the same time. They are also not dangerous to humans except shortly after hatching, when it is common for confused and frightened dragonets to maul or even kill humans hoping to Impress.
When a dragon hatches, they announce their names to their new riders upon Impression. Pernese dragons' names always end in -th. A watch-wher's name will end in "sk".
On canon Pern, barring occasional variations, female dragons and fire lizards are either green or gold in color, and males are blue, brown or bronze.
- Gold dragons, also called queens, are the largest dragons (70-80 feet long, with Ramoth, the largest queen ever hatched, said to be as long from nose to tail as a jet plane according to The Dragonlovers Guide To Pern) (it is known that the previously mentioned text mistakenly used meters as opposed to feet, meaning Ramoth was 45-50 feet in length) and the only fertile females. Gold dragons are by far the rarest dragons on Pern, at just less than 1% of the population. They range in color from pale yellow to dark, antique gold. They are dominant over all other colors; any non-gold dragon will invariably obey a queen's orders, even against the wishes of its own rider. Queens do not chew firestone or breathe fire (see below); however, they do fight Thread - they fly in the lowest wing, with their riders armed with specially designed flamethrowers to flame any Thread missed by the above wings. An egg that is going to hatch a gold dragon is notable: It is gold-colored and larger than other eggs. A gold dragon will always Impress a heterosexual female and are believed by most Weyrfolk to prefer young women who were not raised in the Weyr.
- Bronze dragons are the largest males (55-65 feet long), although they are significantly smaller than the queens. Bronzes only comprise of about 5% of all dragons. Their color is described as golden-green, but some are dark enough to be nearly considered brown. They are almost always the ones to mate with queens, as the smaller colors generally lack the stamina to chase and catch the gold dragons when they rise to mate. Due to the 5-1 bronze/gold ratio and the infrequency of gold mating flights, they often mate with greens (the losers of a gold flight almost always seek a green for their needs), but their size often puts them at a disadvantage in chasing the agile, smaller females. The senior bronze of a Weyr is determined through which bronze wins the mating flight of the senior gold. In canon Pern, the rider of a bronze dragon is always a heterosexual male.
- Brown dragons are the next largest color (50-60 feet long). About 15% of all dragons are brown. They range in color from tan to chocolate. They may occasionally mate with queens, although this is rare, and becomes even more rare as the dragons increase in size; by Ramoth's time in the Ninth Pass it is unheard-of. All brownriders in the Pern novels are men; most are heterosexual, but bisexual or "masculine" homosexual brownriders are not rare. Anne has also stated that masculine females also have the ability to impress to a Brown.
- Blue dragons are the smallest males (35-45 feet long) and make up about a third (30%) of all dragons on Pern. Their color range encompasses nearly the whole blue spectrum. They are nearly as agile as greens, but unlike the greens, they often have enough stamina to last for an entire Threadfall. They mate only with greens, as they are simply too small to keep up with a massive queen over a long mating flight. There are few prominent blue dragons or blueriders in the books. Some assume the position of teaching the new riders after their Impression. Canon blueriders are typically homosexual or bisexual, though some are heterosexual. In interviews, Anne has stated that homosexual women may be able to Impress a Blue dragon, however it has only been shown to happen once in the books with Xhinna Impressing Tazith.
- Green dragons are the smallest normal color (30-40 feet long), and make up about half of all dragons on Pern (50%). Their color range encompasses nearly the whole green spectrum. They are female, but unlike the queens, they are infertile and can produce flame. They are extremely valuable in Threadfall because of their agility, but they lack the stamina to last an entire Fall and generally fly in two or three shifts. Originally, greens Impressed to girls; however, after various natural disasters and plagues decimated Pern's population, women were needed to help repopulate the planet. Since going between during pregnancy can induce miscarriage and because removing pregnant riders from the Wings reduced the effectiveness of the Wings, it became impractical to present large numbers of women as candidates for Impression. Thus, green dragons began Impressing homosexual boys; by the time of the end of the Second Pass, female greenriders were becoming rare. By the time of Moreta in the Sixth Pass, female greenriders were entirely forgotten, although greens gradually begin Impressing to women again in the Ninth Pass. Females of any sexual orientation may Impress Green.
- White dragons - only one is mentioned anywhere in the Pern novels: Ruth, whose rider is Lord Jaxom of Ruatha Hold. He is not an albino, as his hide contains very faint patches of all the normal dragon colors, visible on close examination when Ruth is very clean. Ruth's egg would not have hatched if Jaxom had not forced it open and released the dragonet from an unusually tough shell; thus, it seems likely that white coloration in dragons is normally a lethal mutation, as it is tradition to not assist dragonets who can't hatch on their own. It appears that a white dragonet is unable to break out of their own egg, perhaps due to possibly inadequate strength of the dragonet or the unusually tough shell of a white's egg such as Ruth's had, or a combination of both. Although his parents are the largest queen, Ramoth, and largest bronze, Mnementh, in the history of Pern, Ruth is smaller than even a normal green dragon in his time; he is only slightly larger than the largest dragons of the first generation. While his exact length is never specifically mentioned in the books, it does state that he stands higher than a runnerbeast (horse) at the shoulder, extrapolations suggest that he might be eighteen feet long. He is male or neuter (undetermined), and assumed sterile, with no urge to mate. Ruth also has the unusual ability to intuitively orient himself in time.
According to the Dragonlover's Guide to Pern, the variety of colors are based on the amount of nickel, cobalt, and iron in the dragons' skin. In the real world, the oxides of these 3 elements are notably used for making green, blue, and reddish-brown dyes, respectively, which are the 3 most common colors of dragons.
The larger a color is, the less common it is. For instance, there are more Blues than Browns, and there are more Browns than Bronzes. Half the dragon population is female, with Green dragons being roughly fifty percent of the population and Golds being one percent or slightly less.
In Sky Dragons, it is speculated that Blues and Greens were originally the only colors of dragonet (the species that dragons, whers, and fire lizards were made from), and that Browns, Bronzes, and Golds evolved later in the species' evolution. This is partially confirmed later in the book, when a matings between Blues and Greens in an isolated population start producing queen eggs. These Golds, dubbed "Green Queens", have enhanced psychic abilities that allow them to Impress prior to hatching and detect threats to the clutch's survival. The characters believe Green Queens have these abilities in order to alert the notoriously non-maternal Greens of dangers to their clutch, allowing the whole clutch to hatch.
Riding a larger color of dragon confers higher social status in Pern's extremely hierarchical society, color rankings following the dragons own strict instinctual hierarchical organization based on fire-lizard structures. Perhaps as a result of this, it is commonly believed that the larger colors are more intelligent, although recent novels imply that this may not be true.
The Pernese believe that chewing firestone makes female dragons sterile; they therefore refuse to allow queens to use it. Greens, on the other hand, are so common that if they produced offspring it would quickly lead to overpopulation. They always chew firestone, and because of their numbers and agility they are vital to any Thread-fighting force. However, Dragonsdawn suggests that Kitti Ping -possibly motivated by old-fashioned ideas about gender roles- deliberately engineered greens to be infertile and gold dragons to be incapable of producing flame in order to protect the gold dragons, the only reproductively fertile females, from the dangers of Thread fighting.
Mating and reproduction
Both gold and green dragons experience a periodic mating urge. During a Pass a gold dragon will rise roughly once per Turn, and more often at the beginning of a Pass, yet less often towards the end of a Pass. During an Interval a gold dragon may rise to mate only once every four or five Turns. Greens will rise to mate three or four times a Turn, whether this increased or decreases depending on whether or not it is a Pass is unknown. Greens will mate with any male, usually blues or browns. As they are smaller and have less stamina, a green mating flight is much shorter than a gold one.
When a female comes into estrus, interested males compete to catch her in a mating flight. Usually, the female chooses the male who impresses her the most with his skill in the flight, although inexperienced females may be caught before making their choice. The pair actually mate in midair; thus, the higher they get during the flight, the longer their mating can last. The Pernese commonly believe that longer matings result in larger clutches. For this reason, queenriders are strongly encouraged to restrain their dragons from eating heavily just before a flight, instructing them to drink blood instead for a quick burst of energy.
Effects on rider sexuality
Due to the intense psychic bond between rider and dragon, dragonriders are overcome by the powerful emotions and sensations associated with mating flights. The riders of the mating pair engage in sex themselves, to varying degrees unaware of what they are doing. This contributes to a much looser attitude toward sexuality in general among dragonriders than in the rest of Pernese society.
For much of Pern's history, all greenriders are male. During these periods, all green mating flights result in homosexual intercourse between the riders of the dragons involved. This homosexual intercourse is accepted in the Weyr as being separate from the rider's personal preferences unless the rider has shown otherwise. Mating flight sex between two riders, one of whom is not the other's chosen partner (known as a weyrmate) is not considered to be "cheating." It is understood within the Weyr that sex during mating flights is not optional for the rider. Anne McCaffrey stated that "The dragon decides, the rider complies." Dragons do not usually consider the preferences of their riders when considering what female they wish to chase, or for a female dragon, what male dragon might catch her. A primary example of this behavior is between Weyrleader T'gellan, Weyrwoman Talina and greenrider Mirrim. T'gellan and Mirrim are weyrmates, but T'gellan's bronze dragon must mate with Weyrwoman Talina's gold dragon at least yearly in order for T'gellan to maintain his position as Weyrleader. Mirrim, known to be an extremely acerbic and temperamental rider, shows no jealousy or other problem with her weyrmate's sexual contact with Talina.
Effects on non-rider sexuality
Both green and gold dragons broadcast their sexual feelings on a wide band during mating flights. Weyrfolk tend to become somewhat inured to this and therefore can hold their sexual reactions until an appropriate place and time. However, flights are usually not over the Weyr itself and sometimes the flightpath of the mating flight brings the mating dragons over Holds or Farmholds where the average people occasionally find themselves engaged in unexpected activities. This is especially common among young teens working out in the fields who react to the sudden, unexpected and overwhelming urges with potentially embarrassing results.
Riders of the losing dragons usually seek sexual relief after the intense flight, if they do not have a chosen partner they may seek the comfort of any willing and available partner of their sexual preference. The weyrfolk tend to happily accommodate these riders, especially if they have been affected by the flight's sexual urgency. This is one of the major reasons for the Weyr's reputation for being sexually very open.
Anne McCaffrey has stated in a number of documents and interviews that dragonets use pheromones to determine the sexual orientation of the humans to whom they Impress. According to these statements, greens Impress only to women or to "effeminate" homosexual men. Blues Impress primarily to homosexual or bisexual men with "masculine" temperaments, or possibly to masculine or lesbian women; browns similarly Impress primarily to heterosexual men, but sometimes to bisexual men. Bronzes and golds Impress exclusively to heterosexual men and heterosexual women, respectively.
However, these ideas have never been made explicit in the books (although it is clear, at least, that most male green- and blueriders are homosexual). Many members of online Pern fandom find McCaffrey's ideas about sexuality highly questionable for a number of reasons, both scientific and ethical. (Most infamously, she claimed in an interview that science has proven that being the receptive partner in anal sex triggers a hormonal change that will make a previously heterosexual man become homosexual and effeminate. Thus, she argues, even if a male greenrider were originally heterosexual, he would not stay that way.) In later interviews McCaffrey claims that green dragons merely pick up on psychological clues from homosexual boys before they themselves know that they are homosexual. "A green Hatchling is unlikely to be impressed (pun intended) by a heterosexual boy." - Anne McCaffrey 1998 on The Kitchen Table BB.
Pern-based roleplaying games thus sometimes ignore McCaffrey's restrictions on who can Impress to a given color of dragon. MU*s and fanzine-based clubs often ignore everything except the basic rule that only women Impress gold and only men Impress bronze; PBEM games are more likely to accept the restrictions on sexual orientation. Most clubs post their policy on canon strictness. While some accept more liberal thoughts on color/gender/sexual orientation matches, many are very strict on this issue.
For the purposes of roleplaying games, McCaffrey has also officially allowed females (masculine lesbians) to ride browns or blues, though she insists that this could never happen on her (canon) Pern.
Also in fandom, if a rider has strong objections to sex with someone involved in a mating flight or the writer has objections to writing a homosexual encounter or object to their character being involved in a sexual encounter with a person other than their "significant other," they may sequester themselves with a more acceptable partner during the flight. This idea is called "Stand-Ins" and based on a concept McCaffrey introduced in Dragonseye/Red Star Rising, in which a female greenrider objects to the idea of a specific bronzerider winning her green's mating flight. However, this concept is not seen in other books and clearly does not exist in the 9th Pass, as several problems arise regarding green and goldriders who object to the random nature of mating flights and end up raped by the male winner of the flight (most notably in The Skies of Pern).
As the primary line of defense against the Thread, dragons are a requirement for the survival and prosperity of humans, not to mention other forms of land life, on Pern. However, the great beasts require a good deal of maintenance, to the degree of requiring a large part of Pernese infrastructure - especially cattle farming - to be centered around their upkeep. This has been known to cause resentment among those doing the supporting, especially at times when Thread is not falling.
This in particular has driven weyrleaders to seriously consider how they will live with dragons after the Ninth Pass. In particular, F'lessan spearheaded this effort with the first "Weyrhold" at Honshu Weyrhold. The idea is that when Thread no longer falls, the dragonriders' time will be freed up to establish their own specialized holds. Weyrholds can then work to support dragon upkeep on their own (such as raising their own herdbeasts and the like), without having to depend on others.