I dunno, Bob. I watched the link you sent and thought I was wrong, for a minute. It was cute until the last one where the dog is frantic to get away. That dog CLEARLY was not happy with that bear all over him and as the video cut out, he was trying to run away. The bear caught his backside and was dragging him back. If not a terrified dog, at least an uncomfortable one. I have a feeling if those dogs weren’t chained they would run far and fast from the bears. As chained submissives, they do what they have to do to survive — keep it light, keep it friendly, don’t get eaten. They aren’t “playing” with the bears as dogs do with each other. They aren’t jumping on the bears, crouching and pouncing. They are tolerating and being pawed at by the bears. Feel sorry for the dogs. They’re scared.
I’ve seen other videos of dogs off leash playing with hte bears during these periods- this was on nat geo or discovery channel- i dunno if youtuibe has it or not- maybe- but I;ll look and see
Meanwhile here’s a dog offleash playing with a grizzly-
https://www.youtube.com/watch?v=kJZOeDQDF64