Inside Animal Minds: Who's the Smartest? (S41E19)

What defines intelligence in the animal kingdom? Which evolutionary factors lead to the development of advanced brains? A growing number of researchers suggest that the key may lie in social interactions. Many of the most intelligent species, including humans, are those that thrive in intricate social settings, such as dolphins, elephants, and primates. Could the necessity to navigate relationships with allies and rivals enhance their intellect? NOVA delves into the social dynamics of these remarkable creatures. In Florida, we witness dolphins collaborating to herd fish using a strategic muddy wall. Are they truly coordinating their efforts? Scientists embark on an exploration of animal societies, investigating whether dolphins and elephants possess a form of communication, if chimpanzees have a concept of fairness, and whether any species can experience empathy like humans do.