If you own a dog, you probably know how smart they can be, but a new study suggests that dogs can feel envy. In the study, dogs were asked to perform tricks in front of another dog that they knew, such as a playmate or a pet from the same house. The other dog would then be asked to perform the same trick. One dog would then receive a reward while the other did not.
“If both of them didn’t get a reward, they continued working more or less,” said lead author Friederike Range of the University of Vienna, Austria. “But if one of them didn’t get food, the one that didn’t get food just said, No.”
For more on this study visit National Geographic News.