From Lassie to Balto, pop culture loves stories of a dog coming to a person’s rescue. Anecdotally, people experience their dogs coming to their aid every day.
But is there any scientific evidence behind these sorts of tales? We decided to investigate whether dogs would go a step further than just approaching people: Would they take action to help a person in need?
Dog/human partners come into the lab
We recruited 34 pet dogs and therapy dogs – that is, those who visit people in hospitals and nursing homes – to take part in our study. Dogs included a variety of breeds and ages, from an elderly golden retriever therapy dog to an adolescent spaniel mix.
When they got to the lab, each owner filled out a survey about the dog’s training and behaviors while we attached a heart rate monitor to the dog’s chest to measure its stress responses.
Next, we instructed the owner on how to behave during the experiment. Each owner sat in a chair behind a clear door that was magnetized shut – there as a barrier separating the dog from its owner – that the dog could easily push open. We assigned half the people to cry loudly and say “Help” in a distressed voice every 15 seconds. The other half of our volunteers we assigned to hum “Twinkle, Twinkle, Little Star” and say “Help” in a calm voice every 15 seconds. We ran the test until the dog opened the door or, if it didn’t, until five minutes elapsed.
Past research seemed to indicate that dogs would not help their human companions in distress, but it’s possible that the tasks to demonstrate “help” were too difficult for a dog to understand. So we adapted this straightforward task from previous research in rats. It seemed like dogs would be capable of nudging open a door to access their owners.
Lassie, Timmy’s crying in the other room
We expected to find that dogs would open the door more often if their owner was crying than if they were humming. Surprisingly, that isn’t what we found: About half the dogs opened the door, regardless of which condition they were in, which tells us that dogs in both conditions wanted to be near their owners.
When we looked at how quickly the dogs who opened the door did so, we found a stark difference: In the crying condition, dogs took an average of 23 seconds to open the door, while in the control condition, they took more than a minute and a half. The humans’ crying seemed to affect the dogs’ behaviors, taking just a quarter as long to push open the door and get to their human if they seemed distressed. We did not find any differences between therapy dogs and other pet dogs.
Helping requires more than just empathy
Because both humans and animals tend to be more empathetic toward individuals with whom they are more familiar or close, we thought that the strength of a dog’s bond with its owner might explain some of the differences we saw in dogs’ empathetic responses.
Next, we turned to a test called the Impossible Task to learn a bit more about each dog’s emotional bond with its person.
In this task, the dog learns to tip over a jar to get to a treat; then we lock the jar onto a board with a treat inside and record whether the dog gazes at its owner or a stranger. There have been some mixed results with this test, but the idea is that a dog who spends more time looking at their owner during this task may have a stronger bond with their owner than a dog that doesn’t spend much time looking at their owner.
We found that dogs who opened the door in the crying condition did gaze at their owner more during the Impossible Task than non-openers. On the other hand, it was the dogs who didn’t open the door in the humming condition that gazed at their owners more than those who opened it. This suggests that openers in the crying condition and non-openers in the humming condition had the strongest relationships with their owners.