diff --git a/src/codewars/MenuDisplay.py b/src/codewars/MenuDisplay.py
new file mode 100644
index 0000000..e5af845
--- /dev/null
+++ b/src/codewars/MenuDisplay.py
@@ -0,0 +1,37 @@
+class Menu:
+    def __init__(self, selects: list):
+        self.selects = selects
+        self.cursor = 0
+
+    def to_the_right(self):
+        self.cursor = (self.cursor + 1) % len(self.selects)
+
+    def to_the_left(self):
+        self.cursor = (self.cursor - 1) % len(self.selects)
+
+    def display(self):
+        return (
+            "["
+            + ", ".join(
+                [
+                    f"'{s}'" if i != self.cursor else f"['{s}']"
+                    for i, s in enumerate(self.selects)
+                ]
+            )
+            + "]"
+        )
+
+
+if __name__ == "__main__":
+    menu = Menu(["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"])
+
+    print(menu.display())
+    menu.to_the_right()
+    print(menu.display())
+    menu.to_the_left()
+    menu.to_the_left()
+    menu.to_the_left()
+    print(menu.display())
+    menu.to_the_left()
+    menu.to_the_left()
+    print(menu.display())
diff --git a/src/codewars/__main__.py b/src/codewars/__main__.py
new file mode 100644
index 0000000..8ccf9e1
--- /dev/null
+++ b/src/codewars/__main__.py
@@ -0,0 +1,4 @@
+from codewars.lastDigitOfHugeNumber import last_digit
+
+if __name__ == "__main__":
+    print(last_digit([1, 2, 3, 4, 5]))
diff --git a/src/dog.py b/src/dog.py
index 257c1c4..d9bdf4a 100644
--- a/src/dog.py
+++ b/src/dog.py
@@ -1,16 +1,15 @@
-class Dog:
+from abc import ABC, abstractmethod
+
+
+class Dog(ABC):
     amount_of_dogs = 0
     name: str
-    race: str
     age: int
     weight: float
     bark_sound: str
 
-    def __init__(
-        self, name: str, race: str, age: int, weight: float, bark_sound: str
-    ) -> None:
+    def __init__(self, name: str, age: int, weight: float, bark_sound: str) -> None:
         self.name = name
-        self.race = race
         self.age = age
         self.weight = weight
         self.bark_sound = bark_sound
@@ -18,10 +17,11 @@ class Dog:
         Dog.amount_of_dogs += 1
 
     def __str__(self):
-        return f"{self.name} is a {self.age} year old {self.race}"
+        return f"{self.name} is a {self.age} year old {self.__class__.__name__}"
 
+    @abstractmethod
     def bark(self, times: int = 1) -> str:
-        return f"{self.name} says:" + (f" {self.bark_sound}" * times)
+        pass
 
     def birthday(self) -> str:
         self.age += 1
@@ -30,21 +30,35 @@ class Dog:
     def is_puppy(self) -> bool:
         return self.age < 2
 
+    def __eq__(self, other):
+        return self.name == other.name
+
 
 class Shepperd(Dog):
-    race: str = "shepperd"
     bark_sound: str = "Woo!"
 
     def __init__(self, name: str, age: int, weight: float) -> None:
-        Dog.__init__(self, name, Shepperd.race, age, weight, Shepperd.bark_sound)
+        Dog.__init__(self, name, age, weight, Shepperd.bark_sound)
+
+    def bark(self, times: int = 1) -> str:
+        return f"{self.name} says:" + (f" {self.bark_sound}" * times)
 
 
 class Poodle(Dog):
-    race: str = "poodle"
     bark_sound: str = "Wow!"
 
     def __init__(self, name: str, age: int, weight: float) -> None:
-        Dog.__init__(self, name, Poodle.race, age, weight, Poodle.bark_sound)
+        Dog.__init__(self, name, age, weight, Poodle.bark_sound)
+
+    def bark(self, times: int = 1) -> str:
+        return f"{self.name} says:" + (f" {self.bark_sound}" * times)
+
+
+class Bulldog(Dog):
+    bark_sound: str = "WUUUU!"
+
+    def __init__(self, name: str, age: int, weight: float) -> None:
+        Dog.__init__(self, name, age, weight, Bulldog.bark_sound)
 
 
 dog1 = Shepperd("Bello", 5, 22.5)
@@ -53,7 +67,8 @@ print(dog1.bark())
 print(dog1.birthday())
 print(Dog.amount_of_dogs)
 
-dog2 = Poodle("Barky", 10, 20)
+dog2 = Poodle("Bello", 10, 20)
 print(dog2.bark(3))
 print(dog2.is_puppy())
 print(Dog.amount_of_dogs)
+print(dog2 == dog1)