I need the test for making real mockup for this concept, so I tried the basic 19vertices model with MAYA 3d program. I tested the motion and shape for normal status and reacting approaching person. It needs the motion like a living things in real life and the shape must be more complex. These pictures are the variety of alts for this test.
Starting shape - 24 vertices
Alt_05_Horn
And I tried the animating shape in this process like wave, repeat, flow, bigger, smaller etc. This is the mov for the test. Actually, I have to test more animation for approaching and sitting person.
Test mov