Smithsonian Wild, digital photos displaying the movements and behavior of animals.

"...The use of motion-triggered 'camera traps' has become an incredibly useful tool  for scientists to answer an enormous range of conservation and ecological questions. Researchers attach these unique cameras to posts or trees, often along forest trails, and when a camera's sensor registers an animal's body heat and movement, a photograph is taken. The studies highlighted here demonstrate the range of applications of this method, and how these cameras give us a glimpse into an animal world that is rarely seen by anyone. You can search the site by following the trail of interesting animals or the lure of diverse sites around the world..."

Photo of a Jaguar in Peru from the Smithsonian WILD project.  http://siwild.si.edu/index.cfm?group=canids