Wow this did not scan true to life.
Figured I'd just go with it.
I think I only used three markers for the shading on its skin. I am... rather happy with how the blending turned out, I'll admit.Ammut are capable of changing their form drastically, if necessary (or preferred.) However, it is not an easy process by any means. It consumes a great amount of energy, and puts great strain on the creature to do so.
An ammut would need a somewhat long rest period, and to eat plenty, before and after altering its structure to such a degree.
More images of Ammut: