First Class. It butchers cows…

cow.rb

class Cow
  @@num_legs_butchered = 0
  
  def initialize(num_legs = 4)
    @num_legs = num_legs
  end
  
  def legs
    return @num_legs
  end
  
  def moo
    'moo'
  end
  
  def butcher
    if @num_legs > 0
      @num_legs = @num_legs - 1
      @@num_legs_butchered = @@num_legs_butchered + 1
    end
  end
  
  def self.legs_butchered
    @@num_legs_butchered
  end

end

cowie = Cow.new

puts cowie.moo
puts "Cowie has #{cowie.legs} legs"
cowie.butcher
cowie.butcher
cowie.butcher
cowie.butcher
cowie.butcher

puts "My poor Cowie now has #{cowie.legs} legs :-( "

berble = Cow.new
berble.butcher
puts "Berble has #{berble.legs} legs :("

puts "Total butcheries: #{Cow.legs_butchered}"

tripod =  Cow.new(3)
puts "Woah! Tripod was born with only #{tripod.legs} legs!"  

That was a fun 'class' eh? :D 👍