Easiest way to KO this is to get it stuck in a rock, which are everywhere along the shoreline of the red wood forest. Hit it with a club, but be careful not to kill it. Use mejoberrys, as they tame it faster. Because they flee they can be easily lured into a taming pen of other structure
Easy tame, just use bolas, trap/protect it with spike walls, feed berries, and use narcotics/narco berries to keep torpor up. I play on a small tribes server and tamed a max level in less than an hour with 3x.