There are several out there, this one is my favorite. I like to watch it at night.
http://sportsmansparadiseonline.com/Live_Georgia_Deer_Cam.html (http://sportsmansparadiseonline.com/Live_Georgia_Deer_Cam.html)
Here is another one that I frequent:
www.watchthedeer.com (http://www.watchthedeer.com)
The frames refresh about every 5-10 seconds on several different cameras from around the country.
http://www.africam.com/wildlife/index.php (http://www.africam.com/wildlife/index.php)
Several different cameras in Africa, pretty cool stuff here from time to time as well.