My blood is boiling, but my brain isn't IBM.

[DragonMasterX]

Technically the blood is connected to the lungs, as it carries away oxygen taken in by diffusion gradients across the capillary walls. And it's often more Carbon-DI-oxide not monoxide in bodies.

Oops, my bad with my choice of words. And I was actually trying to explain why it is completely unnecessary for the blood kind and the fire breath to be aligned. I messed up with my mental biology records though lol.

Plus even with the flammable gasses, you would need some degree of heat to ignite them and the only real method i can think of doing that is through the bloodstream. It would be pretty silly to try and invent ways in which a dragon has cold bloodstream as well some form of heating system in it's lungs, just to keep to the characteristics of other lizards because after all, science is open to changes.

[And a side note on behalf of Ghostiemon, we are discussing ANTHRO dragons, not Quasimodo dragons...]

There is a plain co-relation between anthro and 'quasi's. It's the very same we have between Monkeys and Men. Man is "Anthro" by definition; and at the same time we are establishing that Men are nothing else but anthro monkeys in our 'terms of language'.

The same applies to dragons, or any other furry/scalie for the record. An Anthro Dragon is nothing else but a Dragon undergone by a similar (yet anatomically diverse) evolutionary process as simians have. Thus, if 'quasi's were cold blooded, it is fully possible that their blood could have changed (from cold to warm, if you so wish it) along within their evolution into anthropomorphs. However, by the same hypothesis, it is fully acceptable to think the blood could have stayed 'cold' as well.

In short, depending on your version of anthro, the blood kind may vary.