Texas Agricultural Extension Service
The Texas A&M University System
Texas Agriculture Extension System Zerle L. Carpenter, Director The Texas A&M
University System College Station, Texas
Acknowledgments
The printing of this publication was made possible by a grant from the Texas Sheep and Goat
Commodity Board, whose mission is to finance programs to protect sheep and goats, fund
research, and develop educational programs within the 111-county Referendum Area.
The author extends his appreciation to the following individuals for their assistance in the
preparation and review of this publication: Dr. Guy Connolly, Dr. Dale Wade, Dr. Fred Guthery,
Dr. James Browns, Gary Nunley, Murray Walton, Dr. Jack Payne, Roy McBride, Dr.Maurice
Shelton, Allen Turner and Dr. Milo Shult, Dr. Connolly of USDA-APHIS Denver Wildlife
Research Center graciously shared several photographs used herein.
