diff --git a/Polimorfizm.cs b/Polimorfizm.cs
new file mode 100644
index 0000000..f3b1840
--- /dev/null
+++ b/Polimorfizm.cs
@@ -0,0 +1,63 @@
+using System;
+
+abstract class Animal
+{
+    protected int age;
+    protected string sound;
+
+    public Animal(int age)
+    {
+        this.age = age;
+    }
+
+    public void SetAge(int age)
+    {
+        this.age = age;
+    }
+
+    public abstract void MakeSound();
+
+    public override string ToString()
+    {
+        return $"Age: {age}, Sound: {sound}";
+    }
+}
+
+class Cat : Animal
+{
+    public Cat(int age) : base(age)
+    {
+        sound = "Meow";
+    }
+
+    public override void MakeSound()
+    {
+        Console.WriteLine("Meow");
+    }
+}
+
+class Dog : Animal
+{
+    public Dog(int age) : base(age)
+    {
+        sound = "Woof";
+    }
+
+    public override void MakeSound()
+    {
+        Console.WriteLine("Woof");
+    }
+}
+
+class Test
+{
+    static void Main(string[] args)
+    {
+        Animal[] animals = new Animal[] { new Cat(3), new Dog(5) };
+        foreach (Animal animal in animals)
+        {
+            animal.MakeSound();
+            Console.WriteLine(animal.ToString());
+        }
+    }
+}