[masraum]

I am not a dog whisperer. I've seen/watched lots of videos of folks befriending rescues and strays. It seems to be a lot of patience just letting the dogs get comfortable. One thing that I've seen many times is that dogs will decide that someone is a good person based either on how that person treats other people or other dogs. Do you have another dog (friend, neighbor, etc...) that is also a very chilled out pup where you could be "seen" by your new pup interacting with the other dog, giving pets, treats, attention?

Otherwise, just sit still near your dog while sort of ignoring it (watching TV or something). Maybe offer treats on the floor in between you and the dog. I think if you stare at the dog, that makes them uncomfortable. If you ignore them and let them approach and maybe sniff (still ignoring them) they can get more comfortable. Also treats can be a motivator, but not too pushy, not making them come to your hand.