Why gaping dragon is actually called gaping dragon.

I just read somewhere on reddit that gaping dragon was actually use to call tight dragon before solaire(also by devs as on seen in some forums) came long, before that seath experimented on tight dragon (gaping dragon) where after the experiment tight dragon became gaping dragon as its got gaping mouth as not rivalled to previous name as suggested tight dragon..

Its just a theory I came to and you can contribute and discuss how you feel about this...