I’ve had encounters with many black bears and one grizzly. The black bears were all easily spooked and ran away. The grizzly, however, sat there and looked at me as though it were deciding whether to eat me now or save me for later. I have a pic of the encounter I should find and upload here...
Not all black bears run- videos of bears stalking folks back or the person’s vehicles despite the people trying to scare them off- some videos of mountain lions too