[quote=@Antarctic Termite] All of those things would actually work quite well! Except maybe ectothermy. That's a metabolic can of worms we probably shouldn't open. The first thing I thought of would just be really warm, humid breath, but it's possible that their metabolism slows waaaaaaaay down during deep sleep and they lose a lot of heat then. Would make it hard to wake up, though, and their tolerance range would have to be really broad. They might also have some kind of tracheoles hidden in the chinks in their shells and connected to their lungs, allowing them to vent hot air through the rest of their body. Or, y'know, they just operate at a really high normal body temperature relative to mammals. Or they sometimes just belch fire when no-one's looking. Hard to tell. [/quote] Well, I had kept the specifics of hain biology purposely fuzzy so I wouldn't have to get into this kind of stuff, but it makes me feel better that there isn't a glaringly obvious impossibility written right into their description. I'll keep whatever is declared first in canon as canon. However, the simpler stuff is preferred. Some kind of panting thing is probably easiest. The tracheoles are a neat idea, but that sounds like insect stuff and it would make it much easier to die from choking on their own blood should one of them be ruptured. I'd prefer the heat to be transferred around via mostly just blood and plain breath. [quote=@Antarctic Termite] All good! Would be interesting to see what Thacel thinks as he finds out about that legacy, though. [/quote] Sneaky disclosure; Thacel's birth is getting based on some meta as hell shit.