Many prosthetics work by receiving pressure from small movements and translating them into more complex movements.
Ivan Davis for example has made himself a hand with full control of fingers which works by slightly moving or twisting parts of the wrist.
I want a creature eith the least amount of vital organs possible or atleast those organs to the smaller, but first I'm going to make this question specifically about the nervous system and spine.
The way I thought about reducing the spinal cord to the minimum was removing most flesh limbs and making them work like prosthetics but made from bone and tendons, possibly silicon bones since silicon is lighter.
They work just like Ivan's hand but in a more extreme way. Small variations in the deep muscles of the chest and neck translate into complex movements of the limbs.
This way the animal is immune to being paralyzed, the only way to stop it is to shoot the head.
Does this mean that the limbs would be numb without tactile sensitivity or would it possible to have the pressure receptors work in the head?