I am having problems with rigging, need advice please!

Please review these videos I don’t understand why I am having this problem, I am new to game design and I would really appreciate it if someone could point me in the right direction to fixing this issue. Is it something to do with the rig? Does the mesh need more bones?? I just don’t understand. Thanks everyone!

Here is Part 1 of my video explanation

Here is Part 2

As I thought. These sliders have no counterpart in FBX, so they will not be exported and thus are not working in Unity. The tongue is there (and also follows its bones), but it is at its lowest length, completely hidden inside the frog’s mouth.

You could probably animate the scale of the tongue bone and make it grow that way (also you should never scale part of a rig, generally), rotate it to fake the spiral…it will not be exactly the same like your current animation, but recreating that with bones alone, will be difficult…
Alternatively, try to bake the animation, so that it is completely vertex based and try to export that (but I have now idea how/if DAZ can do this and if Unity can work with it).