Javascript object factory instanceof

Question

Why does the following object factory pattern code return false...

var Animal = function(name) {
var temp = new Object();
    temp.name = name;
    return temp;
}

var animal = Animal("fox");

console.log(animal instanceof Animal);

...while the following constructor pattern code returns true;

var Animal = function(name) {
    this.name = name;
}

var animal = new Animal("fox");

console.log(animal instanceof Animal);