Glenn Selk, Oklahoma State University Emeritus Extension Animal Scientist — October is a traditional weaning and culling time for spring-calving herds. Weaning for value-added calf sales is already underway. This is a time when producers decide which cows no longer are helpful to the operation and which heifer calves will be kept for future replacements. Selecting against ill-tempered cattle has always made good sense. Wild cattle are hard on equipment, people, other cattle, and now we know that they are hard on the bottom line. Mississippi State University researchers (Vann and co-workers.