Joppes djurfamilj, hjälp med arv och polymorfism

using System;
using System.Collections.Generic;

namespace Joppes_djurfamilj
{
    class Program
    {
        static void Main(string[] args)
        {
            Petowner Joppe = new Petowner(25);
            Joppe.Menu();
        }
    }
    class Petowner
    {
        private int age { get; set; }
        private List<Animal> animal_List = new List<Animal>();

        public Petowner(int age)
        {
            animal_List.Add(new Cat("Oscar", 15, "fish"));
            animal_List.Add(new Dog("Fido", 10, "meat"));
            animal_List.Add(new Puppy("Wilbur", 6, "dogtreats"));
            animal_List.Add(new Animal("Sven", 40, "pizza"));
        }
        public void List_Animals()
        {
            Console.WriteLine("These are Joppe's animals:\n");
            foreach (var animal in animal_List)
            {
                Console.WriteLine(animal);
            }
            Console.WriteLine("\nPress any button to go back to the menu.");
            Console.ReadKey();
            Console.Clear();
        }
        public void Play()
        {
            Console.WriteLine("Which animal do you want to play with?");
            int i = 1;
            foreach (var animal in animal_List)
            {
                Console.WriteLine(i + " - " + animal);
                i++;
            }
            Console.Write("Your choice: ");
            int Answer = int.Parse(Console.ReadLine());
            if (Answer == 1)
            {
                Console.WriteLine("Joppe is playing with {0}", animal_List[0]);
                animal_List[0].Interact();
            }
            if (Answer == 2)
            {
                Console.WriteLine("Joppe is playing with {0}", animal_List[1]);
                animal_List[1].Interact();
            }
            if (Answer == 3)
            {
                Console.WriteLine("Joppe is playing with {0}", animal_List[2]);
                animal_List[2].Interact();
            }
            if (Answer == 4)
            {
                Console.WriteLine("Joppe is playing chess with {0}", animal_List[3]);
                animal_List[3].Interact();
            }
            Console.WriteLine("\nPress any button to return to the menu.");
            Console.ReadKey();
            Menu();
        }
        public void Feed()
        {
            Console.WriteLine("Which animal do you want to feed?");
            int i = 1;
            foreach (var animal in animal_List)
            {
                Console.WriteLine(i + " - " + animal);
                i++;
            }
            int answer = 0;
            try
            {
                answer = int.Parse(Console.ReadLine());
            }
            catch (Exception)
            {
                Console.WriteLine("You must choose a pet from one of the numbers.");
            }
            
            Food_Menu(answer - 1);

            void Food_Menu(int animal)
            {
                Console.WriteLine("What do you want to feed {0}?", animal_List[animal]);
                Console.WriteLine("1 - Fish");
                Console.WriteLine("2 - Meat");
                Console.WriteLine("3 - Dogtreats");
                Console.WriteLine("4 - Pizza");
                try
                {
                    answer = int.Parse(Console.ReadLine());
                }
                catch (Exception)
                {
                    Console.WriteLine("You must choose a pet from one of the numbers.");
                }

                if ((answer == 1 && animal == 0) ||
                    (answer == 2 && animal == 1) ||
                    (answer == 3 && animal == 2) ||
                    (answer == 4 && animal == 3))
                {
                    Console.WriteLine(animal_List[animal] + " eats the food and get full.");
                    animal_List[animal].Eat();
                }
                else
                {
                    Console.WriteLine(animal_List[animal] + " doesn't eat much.");
                    animal_List[animal].Hungry_Animal();
                }
                Console.WriteLine("\nPress any button to return to the menu.");
                Console.ReadKey();
                Menu();
            }
        }
        
        public void Menu()
        {
            Console.Clear ();
            int menu = 0;
            do
            {
                Console.WriteLine("Welcome to Joppe's friendly animal family.\n" +
                    "Please choose an option from the menu.");
                Console.WriteLine("1 - Play with animals");
                Console.WriteLine("2 - Feed animals");
                Console.WriteLine("3 - Show a list of the animals");
                Console.WriteLine("4 - Exit program");

                menu = int.Parse(Console.ReadLine());
                switch (menu)
                {
                    case 1:
                        Play();
                        break;
                    case 2:
                        Feed();
                        break;
                    case 3:
                        List_Animals();
                        break;
                    case 4:
                        Console.Clear();
                        Console.WriteLine("Press any button to exit the program...");
                        Console.ReadKey();
                        break;
                    default:
                        break;
                }
            } while (menu != 4);
        }
        public override string ToString()
        {
            return String.Format("Joppe");
        }
        
    }
    
    class Animal
    {
        protected int age { get; set; }
        protected string name { get; set; }
        protected string fav_food { get; set; }
        protected string breed { get; set; }
        protected bool hungry { get; set; } = true;
        public Animal(string name, int age, string fav_food)
        {
        
        }
        public virtual void Interact()
        {
            if (hungry == true)
            {
                Console.WriteLine("Sven can't focus because of hunger, and loses the game.\n" +
                    "He proceeds to remind you that starving pets is illegal.");
            }
            if (hungry == false)
            {
                Console.WriteLine("Sven wins the game, since he is by nature a logical thinker.");
            }
        }
        public void Eat()
        {
            hungry = false;
        }
        public virtual void Hungry_Animal()
        {
            Console.WriteLine("Sven reminds you that it is customary to feed your pets.");
        }
        public override string ToString()
        {
            return String.Format("Sven");
        }
    }

    class Cat : Animal
    {
        public Cat(string name, int age, string fav_food) : base(name, age, fav_food)
        {
            this.name = name;
            this.age = age;
            this.fav_food = fav_food;
        }
        public override void Interact()
        {
            if (hungry == true)
            {
                Console.WriteLine(name + " is too hungry to play.");
            }
            if (hungry == false)
            {
                Console.WriteLine(name + " zooms back and forth, chasing a laser dot.");
            }
        }
        public override void Hungry_Animal()
        {
            Random random = new Random();
            int hunt = random.Next(0, 2);
            if (hunt == 0)
            {
                Console.Write("{0} found a mouse and is now full!", name);
                hungry = false;
            }
            if (hunt == 1)
            {
                Console.Write("{0} did not find any mouse, and is still hungry.", name);
            }
        }
        public override string ToString()
        {
            return String.Format("Oscar");
        }
    }
    class Dog : Animal
    {
        public Dog(string name, int age, string fav_food) : base(name, age, fav_food)
        {
            this.name = name;
            this.age = age;
            this.fav_food = fav_food;
        }
        public override void Hungry_Animal()
        {
            Console.WriteLine(name + " whimpers because he is hungry.");
        }
        public override void Interact()
        {
            if (hungry == true)
            {
                Console.WriteLine(name + " is too hungry to play.");
            }
            if (hungry == false)
            {
                Console.WriteLine(name + " chases the ball you threw, and return with it.");
            }
        }
        public override string ToString()
        {
            return String.Format("Fido");
        }
    }

    class Puppy : Dog
    {
        public Puppy(string name, int age, string fav_food) : base(name, age, fav_food)
        {
            this.name = name;
            this.age = age;
            this.fav_food = fav_food;
        }
        public override void Hungry_Animal()
        {
            Console.WriteLine(name + " whimpers because he is hungry.");
        }
        public override void Interact()
        {
            if (hungry == true)
            {
                Console.WriteLine(name + " is too hungry to play.");
            }
            if (hungry == false)
            {
                Console.WriteLine(name + " runs around so fast he stumbles on his big ears.");
            }
        }
        public override string ToString()
        {
            return String.Format("Wilbur");
        }
    }
}

if (foodItems[answer] == animal.fav_food)

if (myBoolean)

if (myBoolean == true)