[quote=@Savato]
<Snipped quote by Gentlemanvaultboy>

They are but it has various ways to use its voice. I believe it is mentioned somewhere that it can do that. I guess if the heat was strong enough to burn its throat until it couldn't be used, the whole body would likely have burned away by then xD 
[/quote]

I suppose that must fall under that "its body holds many secrets" clause.