It is argued that certain constructions of masculinity are considered “criminogenic.” Correctional programming has the potential to facilitate gendered identity shifts, of particular import since inner transformations may be key to desistance from crime. This study examines how identity meanings associated with criminogenic masculinity are changed among men participating in a prison-based animal program (PAP). Through focus groups with participants, this study explores the men’s perceptions of masculinity, negotiations of identity, and the role of the PAP in how they reframe affect and meaning. Ultimately, this study has implications for the potential of the PAP to promote desistance from crime.