diff --git a/ObjectiveMadness/script.js b/ObjectiveMadness/script.js
index e437a44..0a59d5d 100644
--- a/ObjectiveMadness/script.js
+++ b/ObjectiveMadness/script.js
@@ -89,4 +89,76 @@ underwear.displayProduct();
 underwear.displayPrice();
 underwear.calculateTotal();
 
-//https://youtu.be/lfmg-EJ8gm4?si=KJ_EBH2FxCEtonyR&t=19910
\ No newline at end of file
+//https://youtu.be/lfmg-EJ8gm4?si=KJ_EBH2FxCEtonyR&t=19910
+
+
+
+//INHERITANCE
+
+class Animals{
+    alive = true
+    constructor(name, age){
+        this.name = name;
+        this.age = age;
+    }
+
+    eat(){
+        console.log(`This ${this.name} is eating`);
+    }
+
+    sleep(){
+        console.log(`This ${this.name} is sleeping`);
+    }
+    move(){
+        console.log(`The ${this.name} is mowing with ${this.speed} km/h!!`)
+    }
+}
+
+class Rabbit extends Animals{
+    constructor(name, age, speed){
+        super(name, age);
+        this.speed = speed;
+    }
+    run(){
+        console.log(`This ${this.name} is running`);
+    }
+    set sname(newName){
+        this._name = newName
+    }
+    get _name(){
+        return this._name
+    }
+}
+
+class Fish extends Animals{
+    constructor(name, age, speed){
+        super(name, age);
+        this.speed = speed;
+    }
+    swim() {
+        console.log(`This ${this.name} is swimming like a rabbit, hopping through the water!`);
+    }
+}
+ 
+class Hawk extends Animals{
+    constructor(name, age, speed){
+        super(name, age);               //BEFORE constructing the child we NEED to construct the parent with the super() function!!!
+        this.speed = speed;
+    }
+}
+
+let fish = new Fish("izé", 4, 25);
+const rabbit = new Rabbit("nyuszi",5 ,23 );
+const hawk = new Hawk("Man", 5, 80);
+
+console.log(fish.alive)
+fish.eat();
+rabbit.sleep();
+rabbit.run();
+hawk.sleep();
+console.log(hawk.speed);
+
+rabbit.move();
+fish.move();
+hawk.move();
+