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At what age does a kangaroo joey leave the pouch completely?

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Red kangaroos on the move — kangaroo A group of red kangaroos (*Macropus rufus*) using their powerful hind legs and feet to hop.

A kangaroo joey typically leaves the marsupium (pouch) completely between 7 and 10 months of age.1

After being born in an extremely immature state, the joey crawls into the pouch to attach to a teat. As it matures and becomes more active, it gradually spends increasing amounts of time outside the pouch before eventually exiting permanently within that 7-to-10-month window.1