1. Association of Zoos and Aquariums. (2015). AZA accreditation standards. Silver Spring, MD: Author.
2. Brambell, F. W. R. (1965). Report of the technical committee to enquire into the welfare of animals kept under intensive livestock husbandry systems. London, UK: Her Majesty's Stationary Office.
3. Carter, S. & Kagan, R. (2010). Management of ‘surplus’ animals. In D. G. Kleiman, K. V. Thompson, & C. Kirk Baer (Eds.), Wild mammals in captivity: Principles and techniques for zoo management (pp. 263–267). Chicago, IL: University of Chicago Press.
4. How Enrichment Affects Exploration Trade-Offs in Rats: Implications for Welfare and Well-Being