Description (Russian, i`m sorry):
Надеюсь, что мои хэдканоны будут более менее логичными “:D
My’s description from DA:
Вампиризм - это проклятие, которое можно наложить только на живых существ. Проклятие можно передать только с помощью крови, ночью, когда видно луну. Сила проклятия зависит от фазы луны.
Особенности (усиливаются при увеличении луны):
Features (increased with the increase of the moon):
Stages of vampirism (not all):
Although their lifespan is huge, due to their enormous strength, madness and other reasons, they live a very short period of time.
The units were reversed in phases from Half Moon to Full Moon. The council of vampires decides whether such a vampire is worth living or not. (because they are more difficult to control, enforce laws and regulations)
Many things affect the taste of blood: blood type, origin (reasonable, unreasonable), donor health, Rh factor. Every vampire has a different taste for blood.
Registered vampires receive blood at the hospital. Unregistered vampires prey on sentient, unintelligent, steal.
Vampire blood stays out of the body longer, it can still curse someone. If the moon is visible and one of the animals tastes this blood, then this animal can become a vampire.
“Blood connection”
Public
Vampires are citizens of the countries they live in, but vampires can have harsher consequences for breaking the law (especially when the vampire attacks or converts someone), up to and including death.
Death
Sunlight can also kill a vampire. The larger the vampire’s moon, the weaker he is in front of the sun’s rays.
Council of Vampires
S.v. makes it so that vampires get enough blood, so that they are considered citizens, not monsters, so that vampires live peacefully.
But S.v. also controls the vampires themselves, registers them. Forbidden to carry out the rite of vampirism (i.e. turn someone into a vampire), drink blood without consent and too much. He can even decide whether any vampire is worth living or not.
Unfortunately, not all countries support the Council. Some countries cooperate, others stop any attempts to interfere, and still others claim that they can cope on their own and do not need help (Equestria).