Recursively chained send on an object with Array#inject

Suppose you have an arbitrery and dynamic list of methods to call on an object.
For example you have Cat class with methods :
#drink_milk
#sleep
#climb_curtain
#purr
And you want a method taking an arbitrery list of actions to execute as parameter.
With powerful inject method ... so easy to do :

class Cat

  def drink_milk
    puts "I drink milk"
    self
  end

  def sleep
    puts "I sleep"
    self  
  end

  def climb_curtain
    puts "I climb the curtain"
    self  
  end

  def purr
    puts "Miaouu"
    self  
  end


  def do_these_things actions
    actions.inject(self) {|cat, action| cat.send(action)}
  end

end

cat = Cat.new
cat.do_these_things [:sleep, :drink_milk] # => I sleep I drink milk
cat.do_these_things [:purr, :drink_milk, :climb_curtain] # => Miaouu I drink milk I climb the curtain