5. You and your dog are a team
Dogs are pack animals. The physical proximity to its pack members makes the dog happy. And who is the pack of a city dog? Right: his mistress and / or master. Frightened or young dogs benefit even more from being close to humans at night: if they see them as the pack leader, they feel safe and secure around their humans. From this, he draws new self-confidence.
If humans and dogs share their beds with each other, both living beings are guaranteed to benefit from it.
Well then: good night and … woof!