Back to the raccoons. Last week I wrote about one way of indirectly assessing intelligence in non-human mammals: the Encephalization Quotient, the difference between actual brain size and expected brain size based on body size. It’s a measure on which humans outscore all our fellow mammals, bottle-nosed dolphins outrank the great whales, and dim creatures like opossums occupy the cellar. Based on data from the German biologist Dieter Kruska, carnivores have higher indices than hoofed mammals, and raccoons outdo their closest relatives, the bears, pandas, and coatis.
-more-