What is your number? How many rodents have you used? Do you keep track? Could you keep track? What stops you? Number 32 asks neuroscience researchers, who are just starting their careers, to confront the psychological and ethical responsibility of animal experimentation. Some are devoted to their practices; while others have doubts and nightmares that keep them awake. Despite opposing reactions, the young researchers continue their work; hopeful about the significance of their work for humanity. Through powerful imagery and the exploration of basic human emotions, animal research is presented as a complicated practice that shapes more than just the lives of the rats.