The kangaroo has a pouch because this is where the kangaroo would carry its young while it is still growing up. This pouch is called the marsupium and it would carry the joey, the baby kangaroo, until such time when it would be strong enough to go on its own. Take note that only female kangaroos have this pouch.
If you see a kangaroo and it does not have a pouch, you will immediately know that it is male. There are instances when kangaroos can carry up to 2 joeys in their pouch. One is still newborn while the other one is full-grown and would be about to leave the pouch soon.
