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How to enhance your dog's recall
Choose a friendly environment for training.
Your dog will learn best in an environment where it feels comfortable and stress free. If you try to train your dog's recall in an unfamiliar or stressful environment, your dog will have a hard time paying attention to your commands.
The best place to train your dog is in your own yard, since your dog is very familiar with this area and won't feel stressed out. If you don't have a yard, you can take your dog to a familiar park.