“
Rescue dogs are trained to perform such responses on command, often in repulsive situations, such as fires, that they would normally avoid unless the entrapped individuals are familiar. Training is accomplished with the usual carrot-and stick method. One might think, therefore, that the dogs perform like Skinnerian rats, doing what has been reinforced in the past, partly out of instinct, partly out of a desire for tidbits. If they save human lives, one could argue, they do so for purely selfish reasons.
The image of the rescue dog as a well-behaved robot is hard to maintain, however, in the face of their attitude under trying circumstances with few survivors, such as in the aftermath of the bombing of the Murrah Federal Building in Oklahoma City. When rescue dogs encounter too many dead people, they lose interest in their job regardless of how much praise and goodies they get.
This was discovered by Caroline Hebard, the U.S. pioneer of canine search and rescue, during the Mexico City earthquake of 1985. Hebard recounts how her German shepherd, Aly, reacted to finding corpse after corpse and few survivors. Aly would be all excited and joyful if he detected human life in the rubble, but became depressed by all the death. In Hebard's words, Aly regarded humans as his friends, and he could not stand to be surrounded by so many dead friends: "Aly fervently wanted his stick reward, and equally wanted to please Caroline, but as long as he was uncertain about whether he had found someone alive, he would not even reward himself. Here in this gray area, rules of logic no longer applied."
The logic referred to is that a reward is just a reward: there is no reason for a trained dog to care about the victim's condition. Yet, all dogs on the team became depressed. They required longer and longer resting periods, and their eagerness for the job dropped off dramatically. After a couple of days, Aly clearly had had enough. His big brown eyes were mournful, and he hid behind the bed when Hehard wanted to take him out again. He also refused to eat. All other dogs on the team had lost their appetites as well.
The solution to this motivational problem says a lot about what the dogs wanted. A Mexican veterinarian was invited to act as stand-in survivor. The rescuers hid the volunteer somewhere in a wreckage and let the dogs find him. One after another the dogs were sent in, picked up the man's scent, and happily alerted, thus "saving" his life. Refreshed by this exercise, the dogs were ready to work again.
What this means is that trained dogs rescue people only partly for approval and food rewards. Instead of performing a cheap circus trick, they are emotionally invested. They relish the opportunity to find and save a live person. Doing so also constitutes some sort of reward, but one more in line with what Adam Smith, the Scottish philosopher and father of economics, thought to underlie human sympathy: all that we derive from sympathy, he said, is the pleasure of seeing someone else's fortune. Perhaps this doesn't seem like much, but it means a lot to many people, and apparently also to some bighearted canines.
”
”