# Copyright 2017, 2013, 2011 Pearson Education, Inc., W.F. Punch & R.J.Enbody
class Prey(Animal):
    def __init__(self, island, x=0,y=0,s="O"):
        Animal.__init__(self,island,x,y,s)
        self.breed_clock = self.breed_time

class Predator(Animal):
    def __init__(self, island, x=0,y=0,s="X"):
        Animal.__init__(self,island,x,y,s)
        self.starve_clock = self.starve_time
        self.breed_clock = self.breed_time