class Dog:

  def __init__ (self,name="", height= 0,weight=0 ):
    self.name= name
    self.height= height
    self.weight= weight
  
  def run(self):
     print("{} the dog runs", format(self.name))

  
  def eat(self):
  	print("{} the dog eats".format(self.name))
  
  
  def bark(self):
  	print("{} the dog barks".format(self.name))


def main():
  spot= Dog("Spot", 55, 23)
  spot.bark()
  
  bower= Dog()
  bower.bark()
  


main()