Why don healthy wild wolves usually kill people?
This is one of the mysteries about (non-rabid) wolves that has yet to be explained. A prominent wolf worker offered a couple of hypotheses (Mech 1998), which must do meantime. Hypothesis: Humans harass wolves. Then wolves learn to be afraid of people and keep their distance. Wolves who do not learn are killed by humans, become fewer in number and thus dangerous encounters become rare. Hypothesis: Wolf prey is quadruped. Humans are biped. So wolves do not recognise humans as prey. Furthermore, bears sometimes stand on two legs and wolves usually avoid bears.