Humans often identify certain types of animals as especially smart—mostly primates closely related to humans, like great apes, and dolphins. But there are a lot of very smart animals. Take ravens, for example. In a recent study, “teenage” (4-month old) ravens performed as well as adult chimps and orangutans on most intelligence tests in a 33-test battery.

Learn more here on Scientific American about this study and how we might rethink animal intelligence in general.