User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170307010853/@comment-9595671-20170308031534

I'm not sure Dragon power is the answer for everything, while Tannin may have multiple kids, that's likely due to the fact Dragons have a pause button for their aging.

That and some probably have multiple wives, nothing says the Dragon pwoer doesn't work on their own kind. Although that does make me think how funny things could end up if Vali had been hit by Azazel's genderswap gun. *snickers*