‘The Boss’ is known to be the largest and most famous grizzly bear in Banff National Park. 🐻 He’s been hit by a train twice, fights other big grizzlies and is believed to have fathered up to 70% of the grizzlies in Banff. https://t.co/AtpqX9V5SL https://video.twimg.com/ext_tw_video/1838939107986223104/pu/vid/avc1/720x1280/rHqurriOUQALMM0m.mp4?tag=12