During breeding season, Adult male dracorex called Bucks ,enter a state of increased testosterone known as musth. Males first enter musth at the age of 11, but it is not very intense until they are older than 15. Young males appear to enter musth during the dry season (January–May), while older males go through it during the wet season (June–December). Males usually become extremely aggressive during musth. Among both musth and nonmusth males, size is the determining factor in agonistic encounters. In contests between individuals, musth males win the majority of the time, even when the non-musth male is larger.
Behaviors associated with musth include walking with the head held high and swinging, marking, rumbling and grunting. This can last from a day to four months. Agonistic encounters typically consist of threat displays, chases and minor sparring with the Horns.
Serious fights are rare.
Females however differ from males, as she is the one who determines what male will be allowed to mate with her. Females do not fight over who breeds with who. It is only the males.
During mating season the males may travel many miles to the females. Males will fight each other for a female and whoever wins gets to attempt and win her over by “singing”, a series of guttural sounds and bellowing is made in order to try and woo her. Females do have preferences as to what kind of singing they like and will turn down males If they deem them unfit partners. Females called Molly’s enter estrous (heat), and release chemical signals (pheromones) in her urine and vaginal secretions to signal her readiness to mate. A male will follow a potential mate and assess her condition with the flehmen response, which instead of curling their top lip which they are unable to do like most Animals, involve running his snout along her inner leg and tail. Small sensory organs along his snout, similar to the Jacobson’s organs that reside inside his mouth, which are found in lizards, Pick up the scent of the pheromones.
The estrous cycle of a Molly lasts 14–16 weeks with a 4–6-week follicular phase and an 8–10-week luteal phase. While most mammals have one surge of luteinizing hormone during the follicular phase, Dracorex have two. The first (or anovulatory) surge, could signal to males that the female is in estrus by changing her scent, but ovulation does not occur until the second (or ovulatory) surge. Fertility rates in Dracorex decline around 60-65 years of age before completely ending by 70-75 years of age.
Before the mating actually occurs, Bucks who are chosen by females to breed with them engage in a behaviour known as mate-guarding, where they follow oestrous females and defend them from other males. Most mate- guarding is done by musth males. Musth appears to signal to females the condition of the male, as weak or injured males do not have normal musths. For young females, the approach of an rut kirns can be intimidating, so her relatives stay nearby to provide support and reassurance. After the male has chased off all opposing males, the real breeding dance can start. Upon finding a suitable mate, these Gorgeous Creatures courtship involves elaborate, spectacular calls and flight displays.
The flight displays included swoops, chases, and cartwheels, ending in a climax quite beautiful. Towards the end of the mating flight, the two dragons will be floating in a circle close to one another, their roars filling the clouds. One (normally the female) will dive up and down as the other follows. When they are both ready the male will nip at her tail and flirt a bit until she’s turned around. The two continuing to circle even closer as they disappear in the clouds. When it is time the two will finally came from the clouds, their bodies intertwined with wings covering each other and claws interlocked, completely free falling. With locked talons in mid air, the pair will plunge through the sky towards the ground. Just before reaching the earth, the pair break apart from one another and soar again upward, thus completing the “death spiral" and finishing the mating ritual.
Copulation can start.
During copulation, the male are surprising thoughtful of the females well being especially if it’s a female who has never bred before, often laying his head and neck over the female’s back or against her side, and make reassurance whistles and purrs in a effort to ease the female during mating. The penis of a Buck Dracorex is surprising very mobile, being able to move independently of the pelvis. Prior to mounting, it curves forward and upwards. A Dracorex males penis is covered in spikes also known as penile spines, that reside along the head of his Penis and three spines that reside on the the top and bottom. After orgasm the penis will swell (much like a dogs) causing the spikes to flare and try to lock him in a female. Upon withdrawal of a the penis, the spines rake the walls of the female’s which may cause ovulation. The Copulation itself lasts in intervals of 20-25 minutes and does involve pelvic thrusting and ejaculatory pauses. They will breed every few hours to ensure breeding success.
A Mated pair will be together for life like geese, and like geese if a partner dies it’s not to soon until the surviving partner dies from sadness or heartbrokenness. it’s very rare for a Dracorex to find a new mate, especially if they have been mated for a long while.
A long lasting pair of mater Dracorex will also continue to do the mating dance whenever breeding season rolls around. Many believe in a effort to strengthen their bonds with one another, kind of like renewing their wedding vows.
However as a pair gets older and closer to the end of their lives they may Preform a act known as “Matrimonial Suicide”
“Matrimonial Suicide” is a term used when a pair of Dracorex finish their mating dance off with a bang, quite literally.
Mainly observed in elderly pairs, a normal mating dance ends with the pair breaking apart Just moments before striking the ground. If the timing is not perfect, certain death awaits the pair of speeding bullets.
However during “Matrimonial Suicide’ the pair won’t disengage and will instead Plummet to their deaths still locked together with one other. It is still unknown why they do this, though many believe it’s due to the pairs devoted love to one another and the urge to die to together since many pairs that do it are in their 70’s-90’s. However Younger pairs will also do it (though rare) and sometimes males or females who have lost mates will do it also.
After all if one falls they all fall.