On a recent visit to a zoological facility, their senior animal manager asked about my current views on the use of negative reinforcement given past treatment of the subject in my book ZOOmility going back to the mid 2000's, when I largely discouraged trainers from using the training tool. So we thought it might be time to take another look at that behavioral tool to better understand if, when or with what species it is ever appropriate to use negative reinforcement since it requires the presence and subsequent removal of aversive stimuli. We asked well known animal trainer and Clicker Training's Executive Vice President and Chief Training Officer, Ken Ramirez, to weigh in on the subject and share his thoughts and cautions on negative reinforcement. Animal Care Software