I did this for the Rafiki contest on TLKFAA forever ago. here's the brief snippet to go with it:
Ever since that ancient baboon had visited the troop in Grass Walls, Rafiki had been thinking about him and all that knowledge. Last night he had finally brought this up with Khalfani and asked to leave on a quest to learn all he could about Africa. His wise leader had agreed, and so he said his good-byes to his cousin Karibu and best friend Bahati this morning. But Rafiki had no idea that before his journey's end he too would be seen as a wise, ancient baboon.