Dofus is a piece of Equipment.
The Dofus (plural of which is also Dofus) are dragon eggs. Six of them were retrieved from the stomach of a dragon named Bolgrot, and each is an artifact of great power. They were scattered across the land of Amakna by an unknown force. With the discovery of new lands there are also rumors of new Dofus being discovered.
The six original Dofus consist of: Emerald, Crimson, Turquoise, Ivory, Ebony and Ochre. Neither the Ivory nor the Ebony Dofus is currently in game. Alongside the six original Dofus there are a number of others. Some of these are actual dragon eggs, others are just objects painted to look like dragon eggs.
In game Dofus act as another piece of equipment, they have their own slot and give specific stat bonuses. It is only possible to equip six Dofus at once, and only one of each.
These are the six that were pulled from Bolgrot's stomach.
These were laid by other dragons, but are not quite as powerful as the originals.
For one reason or another, these are just egg-shaped objects (or actual eggs, but not dragon eggs).