So my durrsona thing is some species I made up like forever ago (seriously this thing has never really gotten an update) and they have a lot of anatomical quirky things going on with them.

Besides having basically featureless skulls, bugging optical lens caps, a funky digestive system, antennae-like auditory/olfactory sense organs, functionally hermaphroditic reproductive organs, weirdly instinctive communal behaviors, and a WHOLE LIST OF OTHER THINGS they have strange little mouthparts.

Which they usually keep "folded" to look more like a "normal" jaw. Though normal is relative since their mouths are huge and basically lined with tiny little shark "teeth."

But sometimes they'll unfold them to give u a keese 'mere.