for brandenburg farmer jurgen frenzel, the wolves are causing so much trouble, he's worried about hisivelihood. jurgen: i think the wolves are getting smarter. we have a feeling that they're going into the herd, chasing them, and separating a calf from them. reporter: he lost 40 calves in 2017 -- ten times more than the year before. compensation is only given if they can prove it's wolves, which is tricky when the calf just disappears, or it's stillborn because the mother was under stress. farmers are supposed to use fencing, but that's expensive. jurgen: to improve the fences for our two herds -- that's a total of 180 animals -- we'd have to invest nearly 100,000 euros. and we'd only get a subsidy of about 9500 euros. reporter: brandenburg has responded to the farmers' plight. they've authorized hunters to shoot wolves -- if, as in the case of jurgen frenzel, they have repeatedly attacked livestock or a human being. animal protectionists are concerned. stefan hoika has been tracking a pack of wolves in his neighborhood for years, and is convinced the situation isn't that dramatic. an