Who or what is the last thing to enter the bunkhouse in Chapter 2

'After a moment the ancient dog walked lamely in through the open door. He

gazed about with mild, half-blind eyes. He sniffed, and then lay down and put

his head between his paws. Curley popped into the doorway again and stood

looking into the room. The dog raised his head, but when Curley jerked out, the

grizzled head sank to the floor again.'

I'm not sure whether to go with the dog or Curly, but since Curly only popped into the doorway........... I'm going to say the dog.