User blog comment:HictoothForever/TIFF questions??/@comment-24413325-20180916191805/@comment-35775904-20180920212107

When they actually went into the chamber, there were no dragons gaurding it. My guess is proably becuase everyone was gathered in that "colisieum area" to welcom and praise their new alpha..I suppose the rumble horn couldv'e been a gaurd, but it is possible it could be any dragon!

IF there is every species, It'll probably only be the ones that dean invented through the movies and shorts he made. That would leave out: wispering deaths, screaming deaths, speed stingers, eruptadons, and other dragons from the series/games..