public class Dog extends Mammal {

	private String name;

	public Dog() {
		super("Dog", "woof", 2);
		name = "unnamed";
		System.out.println("dog constructor (0 parameters)");
	}

	public Dog(String name) {
		super("Dog", "woof", 2);
		this.name = name;
		System.out.println("dog constructor (1 parameter)");
	}

	public Dog(String species, String sound, String name) {
		super(species, sound, 2);
		this.name = name;
		System.out.println("dog constructor (3 parameters)");
	}

	public void speak() {
		System.out.println("My name is " + name);
		super.speak();
	}

	public void feed() {
		System.out.println("feed me twice a day");
	}
}