Aleksei A. Podturkin, Ph.D., is a junior research fellow at the Scientific Research Department, Moscow Zoo, Russia. His research interests include proximal mechanisms that regulate animal behavior and wellbeing; investigation of potentially graded indicators of wellbeing in animals; and science-based evaluation of the effects of environmental enrichment and training procedures. He has several research projects on reducing the sensitivity of animals to stressors, allowing them to cope with a variety of challenges in the environment.