Javascript inheritance

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

 this.breathe = function() {
 // do something
 }
}

function Dog(name) {
 Animal.call(this, name);

 this.bark = function() {
 // do something
 }
}

Dog.prototype = new Animal();
Dog.prototype.constructor = Dog;

var dog = new Dog("Rex");

console.log(dog instanceof Dog);
console.log(dog instanceof Animal);
console.log(Dog.prototype.constructor);
console.log(Dog.name);

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