Got the Dog model done and in game. Includes wild physic stretching and dangerously floppy ears.
Also implemented it with some pre existing stuff like the trees/junk, thought bubble thing and a spherical world.
One immediate problem is that the collision does not follow the mesh which means as doggo stretches the collider segments remain the same size. This means if stretched doggo's torso will pass through things. No solution comes to mind so i'm putting it off for now.