Conflicts between animals and humans

Conflicts between humans and animals, especially in regard to field crops, have existed since the beginnings of agriculture.  This site leads to a report on work of the National Wildlife Research Center.
Innovative solutions to human-wildlife conflicts
National Wildlife Research Center accomplishments.
http://purl.access.gpo.gov/GPO/LPS35221

National Animal Identification Number system

This system created by the USDA Animal and Plant Health Inspection Service is intended to track cattle and other animals so that disease outbreaks and other problems can be minimized.  Here is a link to a web page.
http://purl.access.gpo.gov/GPO/LPS99230