mccFantasy world where they have been breeding dragons to be smaller and smaller until they have little toy dragons that can sit in your lap and are popular among noble ladies and if you leave them unattended in a home they will gather up all the low denomination change under dressers and such and push them into a corner to make a tiny $4.78 hoard to sit on
e. hashman 
@mcc sounds like the fire lizards in the Pern series
Rho
Joan Albright