Animal Assisted Therapy After Pediatric Brain Injury: Mediators and Moderators of Treatment Response.

Inclusion Criteria: * Diagnosis: Participants must be admitted to the inpatient rehabilitation unit for treatment of an acquired brain injury (TBI, brain tumor, infection, etc). * Consent: The family must provide informed consent by parents or legal guardians. * Assent: The child/adolescent must provide a signature indicating assent to participate in the study. * Age at the time of screening: 4-21 years old * Sex: includes both males and females * Responsiveness: Rancho score greater than 2 at the time of enrollment (as noted in the medical chart). Exclusion Criteria: * Allergies: Patient has a significant allergy to dogs * Fear: Patient has a significant fear of dogs * Disease: Participant is on contact precautions or has a communicable disease that may pose a risk to the dog or dog handler or has a compromised immune system where interacting with the dog and/or handler would be of significant risk to the patient. * Medical History: History of developmental delay prior to ABI. * Behavioral History: Participant or family has a history of animal abuse or cruelty. * Responsiveness: Rancho score of 2 or less