class_inheritance.rb

module Flight
  def fly
    puts "I'm a #{self.class}, I'm flying"
  end
end

class Animal
  attr_reader :num_legs, :warm_blooded
  def initialize(num_legs, warm_blooded)
    @num_legs = num_legs
    @warm_blooded = warm_blooded
  end
end

class Mammal < Animal
  attr_reader :has_hair, :has_vertebrate
  def initialize(num_legs, warm_blooded, has_hair, has_vertebrate)
    super(num_legs, warm_blooded)
    @num_legs = 2
    @warm_blooded = true
    @has_hair = has_hair
    @has_vertebrate = has_vertebrate
  end
end

class Bat < Mammal
  attr_reader :nocturnal
  include Flight
  def initialize(num_legs, warm_blooded, has_hair, has_vertebrate, nocturnal)
    super(num_legs, warm_blooded, has_hair, has_vertebrate, nocturnal)
    @nocturnal = nocturnal
  end
end


class Primate < Mammal
  attr_reader :has_thumbs
  def initialize(num_legs, warm_blooded, has_hair, has_vertebrate, has_thumbs)
    super(num_legs, warm_blooded, has_hair, has_vertebrate)
    @has_thumbs = has_thumbs
  end
end

class Chimpanzee < Primate
  attr_reader :highly_intelligent
  def intialize(num_legs, warm_blooded, has_hair, has_vertebrate, has_thumbs, highly_intelligent)
    super(num_legs, warm_blooded, has_hair, has_vertebrate, has_thumbs)
    @highly_intelligent = highly_intelligent
  end
end

class Amphibian < Animal
  attr_reader :permeable_skin
  def initialize(num_legs, warm_blooded, permeable_skin)
    super(num_legs, warm_blooded)
    @permeable_skin = permeable_skin
  end
end

class Frog < Amphibian
  attr_reader :long_legs
  def intialize(num_legs, warm_blooded, permeable_skin, long_legs)
    super(num_legs, warm_blooded, permeable_skin, long_legs)
    @num_legs = 4
    @long_legs = long_legs
  end
end

class Bird < Animal
  attr_reader :has_wings
  include Flight
  def initialize(num_legs, warm_blooded, has_wings)
    super(num_legs, warm_blooded)
    @has_wings = has_wings
  end
end

class Parrot < Bird
  attr_reader :can_repeat_words
  include Flight
  def initialize(num_legs, warm_blooded, has_wings, can_repeat_words)
    super(num_legs, warm_blooded, has_wings)
    @can_repeat_words = can_repeat_words
  end
end