Watch Secret Life of the Koala

Koalas aren't known for their high energy levels. All this changes during mating season, when males go on the prowl and females--some still raising last year's joey--choose a would-be suitor. Lift the veil on this enigmatic marsupial's romantic and family life, in the heart of the Australian wilderness.

Koalas are synonymous with Australia--but few people realize that they only inhabit the eastern and southeastern regions of the country, where their very specific diet and tree-dwelling needs can be met. Part the branches and peek into the enigmatic day-to-day life of this iconic, sleep-loving marsupial.