Prototype & Prototypal Inheritance

How does this ES6 class syntax relate to prototypal inheritance?
class Animal {
  constructor(name) {
    this.name = name;
  }
  
  speak() {
    return `${this.name} makes a noise`;
  }
}

class Dog extends Animal {
  constructor(name) {
    super(name);
  }
  
  speak() {
    return `${this.name} barks`;
  }
}
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