A new book by Mark Hallett and co-author John M. Harris, "On the Prowl: In Search of Big Cat Origins" (Columbia University Press) is scheduled for publication in June 2020. Reviewed and endorsed by world-renowned wildlife biologist George B. Schaller, it explores the long journey of the big cats through evolutionary time and explains the latest ideas for their conservation. Please go to "Columbia University Press--New Books" and then the "Evolution and Paleontology" section for a preview.