Yellowpaw is later called Yellowfang. Sagewhisker, the ShadowClan medicine cat, convinces Yellowfang that her power to feel pain would make her a very good medicine cat. At first, Yellowfang wants to be a warrior instead, but later she changes her mind. Yellowfang becomes Sagewhisker's apprentice and takes the medicine cats' vows. In this book, being a medicine cat means never having a mate or kittens. But Yellowfang stays with Raggedpelt in secret for a long time.