Males begin to breed at 3 to 4 years of age and females at 2 years producing a joey every year. Birth of a tiny 2 cm jelly bean sized joey takes place after 35 days gestation between June and December in Queensland. The tiny joey clambers into its mother’s pouch and attaches to the smaller of one of two teats, where it will stay until emerging at about 6 months to ride on mum’s back and be taught how to survive in the bush. Young are weaned at 12 months and depart to establish their own home ranges after 2 years.
Koalas can live for up to 12 years in the wild but this is now rare with the increasing incidence of dog attack, disease, bush fire and car strikes.
Interesting fact: Twins are rare but do occur. Similarly, rare blue eyed koalas exist.