When a baby koala — or a joey — is born ... Adult koalas catch chlamydia similarly to humans—through sexual contact with infected individuals. However, koalas are also exposed to the bacteria through ...

The baby koala will stay close to mom for the next year, at which point it will be big enough to climb trees solo Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013.