Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Historically, animals have played many roles to improve the well-being of people through companionship, work, sport, and food. Currently, the trend has been to use animals therapeutically to improve the physical and emotional health of people. There are a variety of terms defining this type of therapy, but the most accurate and inclusive is Animal Facilitated Therapy (AFT).
Whited, Marsha A. and Beran, George R.
"Animal Facilitated Therapy for the Young and Elderly,"
Iowa State University Veterinarian: Vol. 46
, Article 7.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol46/iss1/7