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Originally Posted by Dr Super Good
Also fire breathing is a usless form of self defense, as humans nowdays can easilly manufacture clothing that is flame resiliant
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The animals 4000+ years ago had fire-proof clothing? Strange.
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fire would mearly damage the surface of their scales (which are dead anyway).
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Scales are made of the same stuff that your fingernails are made from: chitin. And that can melt/burn as much as plastic can.
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Next the ammount of enenrgy needed to breath fire is astronomical, especially to super heat it to a temperatre it actually does anything (1000°C+).
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Not true. All you need is a little spark.
Animal planet said that the dragons got hydrogen for their hydrogen sacs from bacteria in their stomach. This hydrogen would be used for flying (hydrogen floats) as well as fire breathing. Dragons also found platinum deposits and ate some of that as a catalyst for the spark. Animal planet also said that dragons would have a flap at the back of the throat (like crocodiles do, to prevent water from going down the throat when it is submerged) to prevent the fire from burning the dragon's innards.
The spark is right at the dragon's mouth, not inside its chest or anything.
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This would also be very likly to happen in a fight as lizards tend to bite each other's necks and so with fire breathing that would be a problem.
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True, I guess. Biting into the others necks + flame breathing = dragon asplodes.