Step 1 for the

gistfile1.js

function Animal(name) {
  this.legs = [];
  this.name = name;
  console.log("Running Constructor " + name);
}
Animal.prototype.sayHello = function() {
  var message = "Hello my name is " + this.name + " and I have " + this.legs.length + " legs"
  return message;
}
function Dog(name) {
  this.legs.push("Right Front");
  this.legs.push("Left Front");
  this.legs.push("Right Hind");
  this.legs.push("Left Hind");
}
Dog.prototype = new Animal();
function Bird(name) {
  this.legs.push("Right");
  this.legs.push("Left");
}
Bird.prototype = new Animal();