gistfile1.rb

class Animal
  attr_accessor :name
  def initialize(name)
    @name = name
  end
end

class Cat < Animal
  def talk
    @name
  end
end

class Mat < Animal
  def talk
    @name
  end
end

class Fat < Mat
  def talk
    @name
  end
end
animal = [Cat.new("My Boom"), Mat.new("My Mat"), Cat.new("New Cat"), Fat.new("skld")]

animal.each do |an|
  puts an.talk
end