Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to choose a training program for your dog [title] Use positive reinforcement. [step] It is extremely important that whatever training program you choose relies primarily on positive reinforcement to teach your dog desirable behavior. Whether training your dog on your own, with family members, or through a professional, training techniques must always be humane.

Ending1: [substeps] Treating your dog like a puppy while still training is always humane. If you don't punish your dog, your dog can do all sorts of dangerous things that may seem contrary to the intention of the trainer and may even drive it mad. Ending2: [substeps] Examples of positive reinforcement include rewarding appropriate behavior with treats, attention, play, and/or verbal praise. Positive reinforcement is only one component of a category of training methods called operant conditioning. Ending3: [substeps] Positive reinforcement is given as a perk, not as a reward. Don't make negative reinforcement your sole entertainment. Ending4: [substeps] Positive reinforcement is the most effective training for all dog breeds, from basic to mandated training for any breed. Many training programs mandate genetic reinforcement, so select a training program that treats all breeds in a way that appeals to your dog and humanely enhances your dog's behaviors.

Answer format: ending1/ending2/ending3/ending4