ARE YOU SMARTER THAN A CHIMPANZEE (PB)

At the extreme end of zoology, psychologists are designing personality tests for dogs and logic problems for pigeons. They're giving fish spatial reasoning problems and asking cockatoos to keep a beat. Now, through dozens of interactive puzzles, IQ tests and quizzes, you can test yourself against the best nature has to offer. So: are you more than a match for a marmoset? Or a bit of a birdbrain? Also explained: the real difference between dog people and cat people.