Post-mortem exams, or necropsies, are a valuable tool for diagnosing disease problems and preventing wider outbreaks and more death loss. The "Feedlot '99" report from the U.S. Department of Agriculture's National Animal Health Monitoring System (NAHMS), indicates that the percentage of dead feedyard cattle receiving post-mortem exams has increased significantly since 1994. The survey data also show more of the exams being performed by someone other than a veterinarian. This suggests that feedyards and their veterinarians have trained crew members to carry out the procedure, a cost-saving practice that also can improve the timeliness of the exam.