When the topic of animal intelligence comes up, we might argue whether a crow or a parrot is the more clever, or if dolphins are smarter than manatees. Seldom do we ascribe smarts to life-forms such as insects, plants or fungi. And it is rare indeed that we question our intellectual primacy among animals. It is true that no other species can point to monumental achievements such as the Colosseum, acid rain, nerve gas and atomic bombs. But that does not mean other species are bird-brained. Metaphorically speaking.
It makes sense that elephants and whales are whiz-kids, given the size of their heads. Depending on species, whale brains weigh between 12 and 18 pounds (5.4-8 kg.), and Dumbo’s cranium would tip the scale at around 11 lbs. (5.1 kg.). Compared to them, our 3-pound (1.3 kg.) brains are small potatoes. What sets mammal brains apart from other classes of animal is the neocortex, the outermost region of the brain responsible for higher functions such as language and abstract thinking. » Continue Reading.