 Recent research has suggested that Woodhouse's scrub jays, along with several other corvids, are among the most intelligent of animals.The brain-to-body mass ratio of adult scrub jays rivals that of chimpanzees and cetaceans, and is dwarfed only by that of humans.Scrub jays are also the only non-primate or non-dolphin shown to plan ahead for the future, which was previously thought of as a uniquely human trait.