If you're drawing male dragons
be sure to include a dobber.
If you're drawing female dragons, include moar tits.
See below for a more anatomically correct representation:

(
Chumps 👀,
Fri 10 Aug 2012, 12:38,
archived)
Ha!
(
Colonel Boris "...a desperate Buzzfeed imitation...",
Fri 10 Aug 2012, 12:40,
archived)