Bob the Cat is one of three Quest Masters found in Falador, the other two being Wyson The Gardener and Vannaka. The Player can speak to Bob without the need for a Catspeak Amulet, which Bob points out as being very interesting when you first meet him.
Bob the Cat assigns the following quests:
After completing this Quest, Bob will tell you that you two have met once before, seeing The Player wandering around on White Wolf Mountain in a daze. Bob is confident that The Player's destiny awaits him/her there.