Humans share basic emotions like anger, sadness, and joy with other animals. But for a long time, scientists argued that complex cognition is necessary for secondary emotions like jealousy and guilt. Owners see those emotions in their dogs all the time, however — and now it turns out they may be right.
Photo by MaraZe via Shutterstock
https://gizmodo.com/dogs-feel-jealousy-raising-questions-about-its-evoluti-1609292639
