Most of us consider our friends to be some of the best people we know. After all, we did choose them. However, some of us might find that a handful of out friends are, well— a little meaner than others. Now before you start reconsidering their value to you, you might want to keep reading.
Researchers from Kyoto University in Japan have found that dogs and capuchin monkeys have a human-like sense of morality. In particular, they react less positively to humans who are less kind, less willing to share or assist other people. Their paper was published in the journal Neuroscience & Biobehavioral Reviews. They performed three experiments designed