Wolf is the second single of popular boy group, EXO. It charted in the Top 10 in Korea and China. The single had sales of over 395,995+. Unfortunately the group took a step back with this song and failed to serve anything except tinnitus. During a Chinese interview, ex-member Kris stated part of the reason he left the group was because of songs like Wolf, although he kept silent when asked who paid for his new jaw.