Hanna, P., Frick, E., Kuczaj, S. 2016. A tool use task proves enriching for a captive sea otter (Enhydra lutris). Animal Behavior and Cognition 3(2), 88–94.
Environmental enrichment is used to improve an animal’s physical and psychological well-being while housed in a captive environment. Alligood and Leighty (2015) suggested that enrichment that emulates the natural and preferred behaviors of the species...