One theory about defending against bear attacks is this: Defenders must be careful not to shoot a bear without immediately killing it, because wounded bears are more likely to attack. The theory has been put forward for many decades. One of those who put the theory up for consideration was Stephen Herrero in his book, “Bear Attacks: Their Causes and Avoidance“. On page 241 of the 1985 edition, Herrero writes: Of course, if an aggressive bear actually attacks you or a companion, a firearm may be a lifesaver, or it may cause a wounded bear to intensify its attack. Herrero...