клас Creature

using System;
namespace DemoCapsulation
{
	public class Creature
	{
		//полета -> характеристики
		private string name;
		private int years;
		private string areal;

		//GET и SET
		public string Name { get; set; }
        public int Years { get; set; }
        public string Areal { get; set; }

    }
}