Puma Field Guide
If you're a big cat fan like I am the Cougar Network, a nonprofit research organization "dedicated to studying cougar-habitat relationships and the role of cougars in ecosystems" offers a free Puma Field Guide that "covers the Biological Considerations, General Life History, Identification, Assessment, and Management of Puma concolor." Go here to download it. They also offer a membership that includes a subscription to their tri-annual publication Wild Cat News, a CD containing the proceedings of all eight Mountain Lion Workshops, frequent "Breaking News" e-mail alerts to keep you in the loop on exciting developments as they occur, invitations to The Cougar Network speaking events in your area, and discounts on merchandise sold in their online store. Check it out!