This doe-eyed Eastern Wallaroo was born in mid-August 2010 at the Oakland Zoo, but he's just now coming into the world. Why? 

Wallaroo babies, called Joeys, are technically born after only one month's gestational period - fur-less, blind, and about the size of a kidney bean (1’’long). This tiny newborn will crawl unaided from the birth canal to the mother’s pouch where it begins to nurse. There it will continue to develop, not making an appearance until it is six to eight months old.

Typically, a Joey will not start coming and going from the safety of its pouch with any regularity until approximately ten months of age... but can be seen for short periods between eight and nine months.  It will feed from mother's milk for 18 months, though on warm days during that time it may go out of the pouch to have a little bite of grass.

Related to the kangaroo, there are four types of Wallaroos: Eastern Wallaroos, the Northern, the Barrow Island Wallaroo and the Euro. The Eastern Wallaroo, like this one, is found throughout Australia.They seek refuge from the sun in caves and under ledges by day and feed at night, finding water by digging in dry creek beds. The dingo and the Wedge Tail eagle are predators of young Wallaroos. Once fully grown though, they can remain completely still to avoid being seen by predators, but are also capable of escaping at quite high speeds.