I was reading all the tips but most were wrong. If you are planning to tame one of these, use a 3 by 3 taming pen with narcotic traps on the ramps. By far the safest way to take down the bear without putting yourself or the bear on danger.
These things are absolute beasts, they do insane damage, grind like a boss, and gain momentum while sprinting, to tame these, get a mount which allows rider weaponry and invest decent amount of health in it. Then let it aggro on you and start tranquilizing them ( rifle advised since x-bow may kill it ).
Its torpor run isn't that annoying so just knock it, feed it, then wreck the island's almost every bit( gigas and titans are exceptions ). Up if this helped.
To make honey last practically forever, make a fishing rod and equip honey, that is about to spoil, to the fishing rod, then un-equip it. It should refresh the spoil timer. Does not work with leech blood. Tested on PS4.