#!/usr/bin/env python

class Rabbit:

    def __init__(self, size, danger):  # <1>
        self._size = size
        self._danger = danger
        self._victims = []

    def threaten(self):  # <2>
        print("I am a {} bunny with {}!".format(self._size, self._danger))


r1 = Rabbit('large', "sharp, pointy teeth")  # <3>
r1.threaten()  # <4>

r2 = Rabbit('small', 'fluffy fur')
r2.threaten()