I have known Michael for 20 plus years and per the consensus I can think of no scenario where he would have willingly left his dog, Bernie.
That dog means the world to him and was essentially his best friend.
I have told Michael in the past that I envied him in some ways, as he has seen parts of this country that I will never see in a million years.
That said I have also often worried about him and his travels and wondered what would happen if he were to come across the wrong person at the wrong time.
I'm still holding out hope that he is found safe and reunited with Bernie, we all are hoping beyond all hope for that happy ending of sorts.
That said given the circumstances... No contact, phone found on side of the road, Bernie wondering alone I have mentally prepared myself (to the best of my ability) for this to not end well.