class Tier:
    age = 0

    def __init__(self, age):
        self.age = age


class Katzenartig(Tier):

    def schnurren(self):
        print("Brrrr Brrrr Brrrr")


class Hauskatze(Katzenartig, Tier):

    def __init__(self, age, name):
        self.name = name
        Tier.__init__(self, age)

    def miau(self):
        print("Miau Miau Miau")


class Grosskatze(Katzenartig, Tier):

    def __init__(self, age):
        Tier.__init__(self, age)

    def roar(self):
        print("Roar Roar Roar")


prinz = Hauskatze(11, "Prinz")
tiger = Grosskatze(5)

print(prinz.__class__.__mro__)
print(tiger.__class__.__mro__)

prinz.schnurren()
tiger.schnurren()