I'm practicing new ways to do mouths, specifically those of the mammalian persuasion since they're... y'know, difficult. And now quite as static as reptilian maws.
For example, setting up Peaches' head here (who belongs to  labbeh took like, 2-3x as many layers as it would usually take. The plus side is, I can do a LOT more with her expression-wise, and the mouth opening up doesn't look as jarring.

This animation is a little rough, but HEY, proof of concept, eh?

Peaches @  labbeh
Animation @ Myself