Book excerpt: Hal Markowitz has been an internationally popular lecturer and consultant on environmental enrichment for four decades. Enriching Animal Lives is chock full of recipes for enriching lives of a wide range of animals along with a generous sprinkling of personal experiences. This book will be of interest to those working in zoos, aquariums, wild animal parks, and animal rehabilitation facilities. It will also be of interest to all animal lovers, especially those with companion animals and scientists conducting research with captive animals. A detailed discussion concerning what represents meaningful environmental enrichment and the need to empower animals is provided in early chapters. The final chapter is a brief autobiographical description of events that led the author to pursue a career in science and teaching, and concludes with why that has been so enriching for him.