     override init(name: String) {
         super.init(name: name)
     }
-    
+
     override func sound() -> String {
         return "baaaa"
     }

    override init(name: String) {
        super.init(name: name)
    }
    
    override func sound() -> String {
        return "neigh"
    }

    override init(name: String) {
        super.init(name: name)
    }

    override func sound() -> String {
        return "moooo"
    }
