I'm so glad you completely ignored my advice and input on wither Reptilicus counted as a snake-based monster or not. If you had, the internet would have been denied this awesome bit of fan art dedicated to Denmark's only, yet infamous giant monster.
The action posing, with the acidic globs coming right towards the viewer are the best parts of this piece!
I tried to do my own Reptilicus piece last year, but couldn't stay accurate to the original creature prop. You on the other hand, not only remained true, but avoided making Reptilicus look weak. And giving him some seriousness that the film's puppet lacked.
And here's that energy I mentioned in the Destroyer pic, albeit fourfold. While Repty's limb placement here seems a touch haphazard, those thrashing coils & fearsomely-rendered snagglefangs lend this Dutch crack-puppet some tragically overdue cred.
I would guess that AIP thought that Reptilicus being indestructible and destructive was not enough, not to mention that they cut out the scenes where he was flying, so they asked that he have some slime-spitting ability to make up for it.
If you ever get the chance to see the Danish version, see it! It's the better version, IMHO. The FX sequences look much more consistent in the that version. (Even though I still love the US version.)