Sexual maturity and lifespan of dragons

in dragons, sexual maturity, that is, when they can sire young, usauly starts ( in cronological years ) from 12 to 1,00 years of age (in Males), and from 15 to 2,000 years (in females). such approach to this primary stage in life begins usally with rapid growth by both sexes. at that point, when most have reached physical maturity, most begin to seek physical relationships, if they have'nt already begun to do so by then.