In the documentary Blackfish, they note that an area of the brain which plays a big role in emotions is much larger in killer whales than it is in humans. They

In the documentary Blackfish, they note that an area of the brain which plays a big role in emotions is much larger in killer whales than it is in humans. They speculate that the social/emotional lives of whales in a pod could be far richer and more complex than what we experience.