class Mammal (object):

   def __init__(self, name):
       self.name = name
       self.stomach = []

   def eat(self, food):
       self.stomach.append(food)
       print "Yum, thanks for the %s" % food

   def __repr__(self):
       return "Mammal named %s" % self.name


class Monkey (Mammal):

   def talk(self, choice=1):
       if choice == 1:
           print 'hoot hoot hoot'
       elif choice == 2:
           print 'chatter chatter'
       elif choice == 3:
           print 'screeeeech!!'
       else:
           print 'Monkey scratches head.'

   def __repr__(self):
       return "Monkey named %s" % self.name

class Dog (Mammal):

   def talk(self, choice=1):
       if choice == 1:
           print 'woof'
       elif choice == 2:
           print 'bark!'
       elif choice == 3:
           print 'WOOF!'
       else:
           print 'Looks confused.'
       
   def __repr__(self):
       return "Dog named %s" % self.name


class Human (Mammal):

   def talk(self, choice=1):
       if choice == 1:
           print 'Why hello there.'
       elif choice == 2:
           print 'When do we eat?'
       elif choice == 3:
           print 'Am I late for class?'
       else:
           print 'Appears confused.'

   def __repr__(self):
       return "Human named %s" % self.name