I have just completed this free course online – Biology and Behaviour FREE short course, it only took a couple of hours (is written as 3-4hours) it has a great explanation of learning theory and the science behind reinforcement, as well as very interesting content on brain activity during sleep and differing states of consciousness. This course is human focused but just demonstrates how transferrable to other species learning theory is and how destructive and counterproductive punishment can be to everyone except the punisher who might get satisfaction from acting out their frustration. Punishment decreases learning and damages the bond between learner and punisher. Rewards increases learning and strengthens bond. Using a mix of punishment and rewards can be confusing to the learner and decrease willingness to learn for fear of punishment. These statements are applicable to all species.