Omg i'm an idiot. I somehow thought it was a dead end and forgot about that dragon. Oh well...killed the other 3 blue ones on that lvl (4k xp per kill is nice) and now i can look what the next lvl has to offer.
Nope sorry, the normal dragon enemies you can already encounter on lvl 10 have those animations. Since they can't be seduced it takes a while for them to trigger it.
For this boss it's just super rare to trigger it but they do a ton of dmg and you should feel lucky cuz the boss does no dmg with that. X3