Obviously, if the bear wanted to kill the dog, it would have been done just as soon as he could catch it. But black bears don’t like small aggressive things that make loud noises and run at and around them really fast. They will retreat most times.
wy69
I also think the bears are extremely wary, edgy, and fearful in the foreign environment of a home and seeing the human and dog launching at them is their shock cue to get back to the woods.
All in all wild animals and bears don’t seem to like sudden shock, and especially from living creatures unusual to them, and absolutely when they are in an unfamiliar, mysterious environment.