They prefer to start the charcoal briquettes on fire the old fashioned way. Meaning, of course, the OLD old fashioned way: breathing on them. They don't even have to shift into their dragon form to do that. Stick a little lighter fluid in there, though, and you'll not only get a sneeze, but a full dragon.
Like this poor guy, terribly unsuccessfully trying to hide behind a tree. It'll be even more futile when his wings come in.
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Commission for failcake.