class Animal { public Animal(String aType) { type = new String(aType); } public String toString() { return "This is a " + type; } private String type; } class Dog extends Animal { public Dog(String aName) { super("Dog"); name = aName; breed = "Unknown"; } public Dog(String aName, String aBreed) { super("Dog"); name = aName; breed = aBreed; } public String toString() { return "It's " + name + " the " + breed; } private String name; private String breed; }