I am not arguing EITHER WAY, I am saying there is no evidence in the lore for either (I never once said that they are cold blooded).... As for the "heart," that is not quite hard evidence... The developers probably did not wish to create a model for a single instance of an unimportant quest item that you only have for all of a minute..... (This is a game, there are priorities) In a fictional world of magic, a four chambered heart is not proof of warm blood....
Fictional world of magic or not, it is based on real world physics, including the physics of life and death, and based on that as well as what I have said earlier, that is quite enough proof of being warm blooded.
Oh, and in the lore, Cyrodiil is a jungle, but in Oblivion, it was not. I suppose that trumps all the establish official lore, as there is "physical evidence" that Cyrodiil is not a jungle..... Whatever...
Oblivion was not the first TES game to break the lore on some level. Regardless, the very existence of argonians in cold areas IN LORE establishes that they are not cold blooded, or they would not survive outside of catosis or hibernation.
At the end of the day, NOBODY knows for sure.... At least I don't pretend that I do....
Fair enough, but that is still just your opinion. Every Argonian I have ever played has been warm blooded. Like the one who went through pale pass in oblivion, where no cold blooded creature could survive, or the one who was a sorcerer with a 100 intelligence; an impossible intellect for a cold blooded creature, or the ones I killed that sprayed blood as only a warm blooded creature can! If you want to RP a cold blooded Argonian, you are in for a true challenge, I can assure you that!