Proposed Canon
A type of Dwagon capable of conducting bombing attacks.
 Known Yellow Dwagons:
 First Appearance
Its special attack, unlike that of other dwagon types, is not breath attack. Apparently yellow dwagons defecate (acidic battlecrap) on their victims.Erf-b1-p006, Erf-b1-p031 It is unknown whether this "acidic battlecrap" could be used in the creation of crap golems
The Zerg Guardian from Starcraft is a large yellowish flying unit that also uses acid in its bombing attacks.