I was going to post the following question about Dragons in Temeraire, but looking for appropriate tags started to think it might be off topic as science based. Could I get a feeling in the room?
In Naomi Novik's Temeraire series Dragons are seen to mature very quickly and then live a very long time. From the information in the books Dragons seem to reach adult size in around a year, sexual maturity in at most 2 years, but can then live for up to two centuries.
Is there a real animal that this sort of growth cycle is based on?