Baby Red kangaroo joeys are born about 2cm long. The red kangaroo joey, emerges from the birth canal, much as any mammal young does, but it is completely blind and hairless. M…oving by instinct only, it crawls up the mother's fur to the pouch, where it attaches to a teat. The teat then swells in the joey's mouth, securing it through all the mother's movement so it cannot be dislodged, until it has grown for several weeks. Joeys spend about 6-8 months in the mother's pouch being nursed. In the initial stages, the joey stays attached to the teat until it is ready to begin being independent. A mother kangaroo is capable of having more than one joey of different ages in the pouch at the same time, feeding on different types of milk..
Kangaroos have "embryonic diapause". This means that the mother kangaroo can suspend the development of the joey when it is still an embryo within her body, awaiting a time when conditions may be better suited for the birth of the young joey (for example, during drought times). This is why female kangaroos of reproductive age spend all of the adult lives pregnant..
Kangaroos can live anywhere between 8-12 years, sometimes longer..
Details on a kangaroo's life cycle can be found at the related links below.. (MORE)