Animal classes and interfaces

animals.cs

namespace LongRunningApp.Animals
{
	public interface ICow
	{
		void Speak();
	}

	public class Cow : ICow
	{
		public void Speak()
		{
			Console.WriteLine("Moo");
		}
	}

	public interface ICat
	{
		void Speak();
	}

	public class Cat : ICat
	{
		public void Speak()
		{
			Console.WriteLine("Meow");
		}
	}

	public interface IMouse
	{
		void Speak();
	}

	public class Mouse : IMouse
	{
		public void Speak()
		{
			Console.WriteLine("Click");
		}
	}
}