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).
Waitomo Glowworm Caves, New-Zealand. The Waitomo Glowworm Caves on the North Island of New Zealand, is known for its population of glowworms, Arachnocampa luminosa. This species is found exclusively in New Zealand.