Dragons are livestock that can be raised and bred at Manor Farm once unlocked at level 92 Farming (not boostable). They can be kept in large pens, which can be built at level 60 Construction, or the breeding pen, which can be built at level 55 Construction. Large pens have a capacity of three animals each, and breeding pens have a capacity of four animals. Dragons can be obtained by breeding or as a rare drop from killing the respective chromatic dragons. The King Black Dragon and Queen Black Dragon drop black dragon eggs; royal dragon eggs can only be obtained through breeding. The large pens will need to be unlocked from the Farmers' Market before being able to build the pen.
In total, there are five different breeds, including the shiny royal dragon.
Like all farm animals, they may have up to three traits, which determine their selling price in beans to buyers, among other effects, and can be sold on the Grand Exchange in their unchecked form. Once they have been checked, however, they may only be traded directly between players or sold to Raptor, the dragon expert. Six (12 with Senior Master Farmer rank in Farming reputation) can be sold every three days.
While in a pen, dragons may produce dragon manure, which can be used to make ultracompost. In order to collect dragon manure to use as ultracompost, the player must have an empty bucket in their inventory.
Placing an elder dragon of any breed in a large pen with a farm totem grants the perk "Dragon Ultra Combo", granting a 1/1,000 chance of receiving an ancient effigy when checking a fully grown Farming patch that was treated with ultracompost. If elder dragons are placed in two pens with farming totems, the chance is increased to 1/750.
There are five dragon breeds in the breeding log. Dragons can only breed offspring of the same or the next tier (green → blue → red → black), or intermediate tiers (e.g. a blue and a black dragon can breed a red dragon). Royal dragons act as black dragons for breeding.
Successfully breeding a shiny dragon with a pair of dragons which have the Frost Breath, Poisonous Breath and Shock Breath traits shared between them (chances can be increased with the Sparkling, Glistening, and/or Radiant traits)
The release of player-owned farm and these dragons caused a large increase in prices of almost any type of low-level raw fish and raw meat, such as raw shrimps and raw beef.
A large amount of the names that Dragons are references to various named Dragons in both pop culture and mythological sources.
Meraxes is the name of one of the dragons ridden by Aegon the Conqueror's wives, during the Aegon's Conquest, centuries before the events of A Song of Ice and Fire.
Drakaina is the name used to describe a female serpent or dragon in Greek mythology.
Tiamat is the name of a Mesopotamian goddess who sometimes takes the form of a dragon. They also appear in the tabletop game Dungeons & Dragons as an antagonistic figure, alongside Bahamut.
Orochi is a reference to the Yamata no Orochi, an 8-headed and 8-tailed giant snake from Japanese mythology, where snakes are considered a form of dragon.
Sarkan is a reference to the high fantasy novel Uprooted, where Sarkan is a wizard known as "The Dragon"; despite being a male character, the name Sarkan is only present on female dragons.
Lance is a member of the Elite Four who specializes in Dragon-type Pokémon in the Pokémon franchise.
Errol is the name of the swamp dragon in Guards! Guards!, a fantasy novel by British writer Terry Pratchett, the eighth in the Discworld series, first published in 1989.
Amaru is a huge double-headed serpent or dragon that dwells underground in Incan mythology.
Primefyre may be a reference to the CW show, The 100. In the show Praimfaya was a wave of fire/radioactivity that went around the world, destroying most of it.