module Flight
	def fly
		puts "I'm a parrot, I'm flying!"
	end
end

class Animal
	attr_reader :name
	def initialize(name)
		@heart = 1
		@name = name
	end
	def heart
		@heart
	end
end

class Mammal < Animal
end

class Amphibian < Animal
end

class Primate < Mammal
	attr_reader
	def initialize(name)
		super(name)
		@legs = 2
		@strength = 10
	end
	def legs
		@legs
	end
	def strength
		@strength
	end
end

class Frog < Amphibian
end

class Bat < Mammal
end

class Bird < Animal
end

class Parrot < Bird
include Flight

end

class Chimpanzee < Primate
	def initialize(name)
		super(name)
		@hairy = "very"
	end
end
primate1 = Primate.new('Joe')
chimp11 = Chimpanzee.new('Bob')
puts "#{chimp11.name} has #{chimp11.heart} heart"
puts "#{chimp11.name} has #{chimp11.legs} legs"
puts "#{chimp11.name} has #{chimp11.strength}KG grip strength"
puts primate1.inspect
puts chimp11.inspect
parrot1 = Parrot.new('Hyuk')
puts parrot1.inspect
parrot1.fly
bat1 = Bat.new('yolo')
puts bat1.inspect
bat1.fly #Bat doesn't work because I did not include the module Flight in the Bat class or any of its superclasses