I created these in response to a request from NeverForsaken, Thank NeverForsaken for the request!
The cage is from Sim 3 converted to work for these dragons, I have set the food to cost a lot less and filling is not needed as often. Dragon cost $200 to stock.
Dragons do not die.
Very Low chance your sims will be bit.
You find the cage under Misc/Pets for $500.
I added 3 deco slots on the bottom shelf of the cage.
Credits to NeverForsaken for the idea and everyone who helped with testing and support.