Whether we are an animal lover or not, we can hardly dispute the unquestioned loyalty of dogs. Waiting patiently for their owner to return from the shop or restaurant, or waiting at home for their owner to return home from work or just waiting in the backyard waiting for some attention, their capacity for patience is enviable.
Dogs seem to live for their owners. They look genuinely excited and happy when their owners appear. They look as if they have nothing else they would rather be doing than spending time with their owners.
We might wonder what they are thinking when their owners are absent. What they think about themselves. Whether they feel annoyed at their owners. Whether they experience sadness or a sense of rejection when their owners go out without them. Do they have any sense of time? Any sense of when they might expect their owners to return back to them?
Not all dogs are as disinterested in people around them as this one. Some dogs in this situation would be jumping around, trying to get some attention, showing themselves to the world. Some might even growl or bark. Some might try to get their owners' attention by whining or barking.
This dog seems well versed in the experience of waiting. He perhaps trusts that his owners will return in time. Knowing that barking or whining will not be helpful. May be he learnt that through experience. May be he is usually passive and calm.
Dogs, like people, may have their own personalities, their own temperaments, their own ways of coping with life. They, like people, might learn over time what works best, when to invest energy and when to conserve it.