Sleeping is the best way for koalas to conserve energy—a good excuse for the next time you need a nap. | National Geographic

Leaf connoisseur in the making 🐨 🌱 Baby koalas, called joeys, can’t eat eucalyptus leaves right away. Their stomachs aren’t ready to handle the tough, fibrous leaves, and they don’t yet have the special gut bacteria needed to digest them. When a joey is around 6–7 months old, the mother helps it make the transition from milk to gumleaves by producing a special substance called pap. Unlike the hard, dry pellets of adult koala poo, pap is soft and runny. Pap is rich in protein and, most importan