Add Yahoo as a preferred source to see more of our stories on Google. Chattering teeth – that rapid, sometimes noisy clack of your upper and lower teeth – is a minor, startling symptom that can feel ...

Monkeys live throughout Asia, Africa, Central America, and South America. They’re distinct from other types of primate, like great apes (gorillas, chimpanzees, orangutans, bonobos, gibbons) and ...