class Dog:
    def __init__(self, name, age, breed):
        self.name = name
        self.age = age
        self.breed = breed

    def make_sound(self):
        print("The dog barks.")

class Cat:
    def __init__(self, name, age, color):
        self.name = name
        self.age = age
        self.color = color

    def make_sound(self):
        print("The cat meows.")

def make_animal_sound(animal):
    animal.make_sound()

dog1 = Dog("Buddy", 3, "Labrador")
cat1 = Cat("Fluffy", 2, "White")

make_animal_sound(dog1)  # prints "The dog barks."
make_animal_sound(cat1)  # prints "The cat meows."