Declaring subclasses that inherit the conformance to protocols

We have an Animal class that conforms to both, the AnimalProtocol and Equatable protocols. Now, we will create a subclass of Animal, a Dog class that overrides the string computed properties defined in the Animal class to provide the appropriate values for a dog:

public class Dog: Animal {
    public override var spelledSound1: String {
        get {
            return "Woof"
        }
    }
    
    public override var spelledSound2: String {
        get {
            return "Wooooof"
        }
    }
    
    public override var spelledSound3: String {
        get {
            return "Grr"
        }
    }
    
    public override var danceCharacters: String {
        get {
            return "/-\\ \\-\\ /-/"
        }
    }
}

With just a few additional lines of code, we will create another subclass of Animal, which is a Frog class that also overrides the string's read-only properties defined in the Animal class to provide the...