Multidisciplinary mental health rehabilitation settings often encounter patients with complex comorbid medical and psychiatric issues that require integrative, multifaceted treatment strategies. Although medication and psychotherapy are typical treatment mainstays, a broader variety of therapeutic options are available, including animal-assisted therapy. Here we describe a patient who received animal-assisted therapy as a psychiatric rehabilitation tool to ameliorate his atypical depression following an assault and subsequent head injury. A review of the relevant literature highlights the therapeutic potential of animal-assisted therapy to restore and maintain patient independence and level of functioning, both of which are key treatment goals.