I see it could be two ways. One: the big dog is very kind and left the big bed for the pup. Two: the pup went on the big bed and left the small bed for the big dog. In that case, if I was the big dog, I would just lay on the small dog (or around it).
The Orana Wildlife Park in Christchurch, New Zealand has a much better idea on how to build a zoo. Instead of caging the animals, they cage the people, so they can view the animals in their natural habitat.