Board Thread:Other TES Titles/@comment-24267938-20130620154222/@comment-10862555-20130628210219

The Book 'There Be Dragons' states the following:

There is no credible story of how dragons came to be. According to dremora that the College of Whispers have "questioned," they just were, and are. Eternal, immortal, unchanging, and unyielding. They are not born or hatched. They do not mate or breed. There are no known examples of dragon eggs or dragonlings. The IliacBay area has stories of such things, but so far all have proven false. The eggs turned out to be eggs of other reptiles. The small dragons were merely oversized lizards and no relation to true dragons.

http://elderscrolls.wikia.com/wiki/There_Be_Dragons