////////////////////////// Animal Class Example D ////////////////////////////////
		
		class Animal	{
		
		  /** 3 numeric variables to hold our information */
		  int height;
		  int weight;
		  int lifespan;
		
		  /** Empty "default" constructor" */
		
		  Animal()	{
		   }
		
		  /** Constructor initializes our 3 variables with the three incoming parameter values of the same name */
		
		  Animal(int height, int weight, int lifespan)	{
		   this.height = height;
		   this.weight = weight;
		   this.lifespan = lifespan;
		   }
		
		  /** method allows our animal to "eat" (currently doesn't do anything) */
		
		  public void eat()	{
		  }
		
		  /** method allows our animal to "sleep" (currently doesn't do anything) */
		
		  public void sleep(int howLong)	 {
		  }
		};