They know that the future contains the past, so the best way to know what went on is to move forward. With your nose to the ground. Dogs are never judgmental. They are well aware that everything in the world is there for their enjoyment and they take full advantage of that. You will never see a dog enter a new place with prejudice.
Every new environment is an opportunity for exploring and learning.
The dog's approach to relationships is to love everything unconditionally, and as often and as much as you can. Everyone who is accepted as a member of the pack therefore receives unlimited love and invitations to play. Of course, dog's reputation for loyalty is legendary. Dogs live in a different sensory space than we do. Dogs can sense things far away and around corners, through doors and inside containers.