During the War of Conquest

Balerion, also known as the Black Dread. Ridden by King Aegon I Targaryen, King Maegor I Targaryen and King Viserys I Targaryen. Born before 114BC, died in 94AC, of old age.

Vhagar. Ridden by Queen Visenya Targaryen until her death. Later ridden by Lady Laena Velaryon, and shortly after her death claimed by Prince Aemond Targaryen. Vhagar was born in 51BC and died in 130AC, during the Dance of the Dragons.

Meraxes. Ridden by Queen Rhaenys Targaryen. Born on Dragonstone prior to the War of Conquest. Died during the reign of Aegon I in Dorne.

Post War of Conquest

Arrax. Ridden by Prince Lucerys Velaryon. Born after the War of Conquest. Died in 129AC, at Shipbreaker Bay.

The Cannibal. A wild dragon, never ridden. Known to feast on other dragon carcasses.

Caraxes, called the Blood Wyrm. Ridden by Prince Daemon Targaryen. Born after the War of Conquest. Died in 130AC, during the Dance of the Dragons.

Dreamfyre. Ridden by Princess Rhaena Targaryen, and later by Princess Helaena Targaryen. Born after the War of Conquest. Died during the Dance of the Dragons in 130AC, during riots in King's Landing.

A House Targaryen dragon is unleashed on the battlefield

Grey Ghost. A wild dragon, never ridden. Died in 130AC when attacked by Sunfyre.

Meleys, called the Red Queen. Ridden by Princess Rhaenys Targaryen. Born after the War of Conquest. Died in 129AC, during the Dance of the Dragons.

Moondancer. Ridden by Lady Baela Targaryen. A she-dragon. Born after the War of Conquest. Died in 130AC.

Morghul. Bound to Princess Jaehaera Targaryen. Born after the War of Conquest, presumably during the reign of King Viserys I Targaryen[23] Died during the riots in King's Landing in 130AC.

Morning. Hatched by and bound to lady Rhaena Targaryen. Born late during the Dance of the Dragons.

Seasmoke. Ridden by Ser Laenor Velaryon, and later by Addam Velaryon. Born after the War of Conquest. Died in 130AC.

Sheepstealer. A wild dragon, eventually ridden by Nettles. Born after the War of Conquest.

Shrykos. Bound to Prince Jaehaerys Targaryen. Born after the Conquest, presumably during the reign of King Viserys I Targaryen. Died during the riots in King's Landing in 130AC.

Three dragons destroy a castle. by Tomasz Jedruszek.

Silverwing. Ridden by Queen Alysanne Targaryen, and later by Ulf the White. Born after the War of Conquest.

Stormcloud. Bound to Prince Aegon the Younger. Born after the War of Conquest. Ridden only once, in 129AC. Died a few hours later.

Sunfyre, also called the Golden. Ridden by King Aegon II Targaryen. Born after the War of Conquest, presumably during the reign of King Viserys I Targaryen. Died during the Dance of the Dragons, in 130AC, at Dragonstone.

Syrax. Ridden by Princess Rhaenyra Targaryen. Born during the reign of King Jaehaerys I Targaryen Died during riots in King's Landing in 130AC.

Tessarion, als called the Blue Queen. Ridden by Prince Daeron Targaryen. A she-dragon. Born after the War of Conquest. Died during the Dance of the Dragons, in 130AC.

Tyraxes. Ridden by Prince Joffrey Velaryon. Born after the War of Conquest. Died in 130AC, during riot's in King's Landing.

Vermax. Ridden by Prince Jacaerys Velaryon. Born after the War of Conquest. Died in 130AC.

Vermithor, also called the Bronze Fury. Ridden by King Jaehaerys I Targaryen and later by Hugh Hammer. Born after the War of Conquest. Died in 130AC, during the Dance of the Dragons, at Tumbleton.

The last living dragon. Born and died during the reign of King Aegon III Targaryen]. Was once seen by Ser Arlan of Pennytree when he was still a boy; it was not really combat-worthy.

Of unknown or uncertain chronology:

Urrax (according to legend slain by Serwyn and probably mythological, as it would have existed centuries before the arrival of the Targaryens)

Known Dragon Eggs

Aegon V's egg - white and green swirls

Aemon Targaryen's egg - known to exist, but so far undescribed

Aerion Targaryen's egg - gold and silver, with veins of fiery colors

Ambrose Butterwell's egg - red, with golden flecks and black whorls

Euron Greyjoy's egg - Euron claimed he threw it into the sea.

{hatched} - black as the midnight sea, alive with scarlet ripples and swirls

{hatched} deep green, with burnished bronze flecks

{hatched} colored pale cream, streaked with gold

A greenseer is the name for the wise men of the children of the forest who had magical abilities that included power over nature and prophetic visions.

Greenseers had the greensight and were wargs as well. The First Men believed that they were responsible for carving the faces into weirwood trees and stories describe the greenseers seeing through the faces of their weirwoods, influencing animal and plant life. As the tales go, they used their power to shatter the Arm of Dorne into the island chain of the Stepstones.

One in a thousand men is born a skinchanger and one skinchanger in a thousand is born a greenseer. It is also known that humans can be born greenseers just as they are born wargs.

The relationship between the greenseers of the children of the forest and the order of green men who protect the Isle of Faces in the God's Eye has not been specified. There is one greenseer left in the world - the Last Greenseer.

A skinchanger is a person with the ability to enter the mind of an animal and control its actions. It is much easier for a skinchanger to do so if a bond exists between the two parties. A skinchanger able to enter the mind of a wolf or dog is known as a warg. The interaction between the skinchanger's and animal's mind will influence both personalities, with detrimental effects to the human if the animal's influence is not fought. As yet, there has only been one known incidence of a skinchanger entering another human's mind, and only a simple-minded one at that. This incidence was particularly traumatic to the person involved, and difficult for the skinchanger. Such an event proves to be a moral and ethical dilemma.

An untrained skinchanger may unconsciously enter the mind of an animal, especially while sleeping, particularly if a bond exists. It is extremely traumatic if an animal is killed while its mind is inhabited by a skinchanger. If a skinchanger is killed while inhabiting a creature, a part of his consciousness will remain in the creature. Much fear and superstition exists around skinchangers, with many mistakenly believing them to be shape shifters. It is said the greatest of the skinchangers were the greenseers, who amongst many other things were also wargs. The greatest amongst them could wear the skin of any beast. One man in a thousand is born a skinchanger, and one skinchanger in a thousand could be a greenseer.

Nature of the beasts,

Dogs are easy to bond with, because they are so much like humans and trusting; it becomes easier with time to enter one.

Wolves are harder; one has to forge a lasting bond, much like a marriage. A man might befriend a wolf, even break a wolf, but no man could truly tame a wolf.

Birds are very tempting, but a warg may soon lose contact to the mundane things of earth, and want only to fly.

Cats are cruel and vain beasts and can't be easily controlled, only forced.

Elk and deer are prey; wear their skins too long, and even the bravest man becomes a coward.

An unwritten code of ethics for wildling skinchangers, has forbids them:

To eat of human meat.

To mate as wolf with wolf.

To seize the body of another man (this is the worst abomination).

Second Life

A skinchanger can experience many deaths while in another body. It is only when the person's human body dies that the "true death" occurs. It is possible for the warg to live a type of second life, a much simpler life inside the mind of an animal he controls. In the second life, the skinchanger's memory slowly fades until nothing of the man is left and only the beast remains.

Known skinchangers

There have been few known skinchangers in modern times, with most people associating them with the legends of the children of the forest, particularly the greenseers.

Wildlings

Gaven Greywolf, legendary a First Man skinchanger defeated by the Kings of Winter in the "savage War of the Wolves".

The Warg King, defeated by the Starks in a war for Sea Dragon Point. The Warg King was a monarch and a skinchanger in what is now the North after the Long Night. His given name is unknown.

History

Documents of the Nightfort indicate that the Warg King ruled Sea Dragon Point. He was allied with the children of the forest, but they were defeated by the Kings of Winter of House Stark. The Starks killed his sons, beasts, and greenseers, but took his daughters as prizes