gistfile1.js

var yeti = {
    find: function fn() {
        return this.appetite;
    },
    appetite: "gigantic"
};

var polar_bear = Object.create(yeti);
polar_bear.appetite = "huge";
    
var seal = Object.create(polar_bear);
seal.appetite = "big";

var arctic_hare = Object.create(seal);

var snow_mouse = Object.create(arctic_hare);

var snow_mole = Object.create(snow_mouse);
snow_mole.appetite = "tiny";

console.log(yeti.find()); //gigantic
console.log(polar_bear.find()); //huge
console.log(seal.find()); //big
console.log(arctic_hare.find()); //big
console.log(snow_mouse.find()); //big
console.log(snow_mole.find()); //tiny