Add Yahoo as a preferred source to see more of our stories on Google. But exactly how some parts of any animal's environment sparks more curiosity than others remains unclear. Researchers theorise ...

It is always cute to see a monkey get up to some monkey business. Sometimes that monkey business involves one of these primates being very, very naughty. At others, it involves something more playful ...

Monkeys voluntarily spent long periods playing a touchscreen video game for a new study, driven purely by curiosity without any food reward, leaving scientists stumped. The findings, according to ...