Breaking news! Scientists at Harvard University have discovered that some monkeys are smarter than others. They created a monkey IQ test and gave it to 22 tamarin monkeys. Amazingly, some monkeys performed better than others!
I am sure that this discovery will be useful, as in the future the scientists will be able to design monkey SAT tests, and use them to ensure that only the best and brightest monkeys come to Harvard primate labs. Meanwhile other scientists might consider exploring whether household pets (cats, dogs) might vary somewhat in cognitive ability; millions of pet owners are wondering.