Maximum floof detected! Sleep mode engage
From my experience, pit bulls are just like this. Every single one I’ve seen. They’re baby.
Big block headed lap dogs, despite how big they get
I would make sure the owner knows about this behavior. Napping is probably the pup’s coping mechanism to deal with a potentially scary/chaotic/dangerous new environment, BUT there might be a medical issue. If the pup is sleepy/low-energy all the time or is in pain such that moving hurts, the owner will probably want to tell their veterinarian.
It does look like 3 of those pictures may be the same golden, so it may not be just sleeping on all random dogs. Could just be a case of cuddling with one or two that it likes. That’s also a really young puppy by the looks, and getting tuckered out isn’t abnormal.
Still good advice to keep eyes and watch for the things you mentioned.