Here's an interesting video on Dung Beetles, they're actually really beneficial insects to have. They help remove cow patties, and reduce horn fly populations.
http://www.24-7agtv.com/Joomla/index.php?option=com_seyret&Itemid=1&task=videodirectlink&id=79
http://www.24-7agtv.com/Joomla/index.php?option=com_seyret&Itemid=1&task=videodirectlink&id=79