In innate areas like state parkland where there are high concentrations of humankind , it ’s not rare for hoary bears to become accustomed to the great unwashed — and to search out the nutrient they bear . And while the majority of grizzlies only scavenge leftovers after hikers have vacated a campsite , every once in a while they become aggressive .
Until recently , the options for a bear who had killed or hurt a human were pretty modified — they were either euthanized or relocated to a menagerie . But several European countries and Canada have bug out developing bear rehab centers as an alternate option . According toNational Geographic , the rehab heart take in orphaned cub and problem bears , teaching them to avoid human before releasing them back into the wild .
Though the rehab programs are comparatively new , their success pace are high . Since 2007 , the Northern Lights Wildlife Society in British Columbia has unloose 18 orphan cubs back into the wilderness , and only two have scram into bother with human race . Additionally , the survival of the fittest and reproduction rates of release Ursus arctos horribilis are corresponding to those of fully wild bears .

The rehab centers have come up that they do n’t need to affright grizzly in orderliness to make them leery of human beings . In the past , the National Park Service has used rubber bullets as an aversion technique to make grizzlies stay away from people . To some degree , the rehab program do attempt to foster wariness in the bear — for example , veterinarians , whose needles cause the bear small-scale pain , are some of the only humans the grizzlies ever play . But or else of relying on “ aversive conditioning , " the rehab marrow are more concerned in providing them with the “ bear ” necessities — that is , introducing them to wild food for thought and pay them a chance to construct up their size and persuasiveness for increase their chances of survival of the fittest in the wild .
[ h / tNational Geographic ]