Animal-assisted interventions research: issues and answers.

Animal visitation programs have been used in a wide variety of clinical settings with predominantly positive outcomes reported anecdotally. However, there is also a growing body of research investigating the effects of these interventions. Developing and conducting rigorous studies of animal interventions can be a complex and challenging process, The purpose of this article is to identify and discuss several issues arising with this type of research and to posit suggestions for avoiding pitfalls.