You may wonder if your dog will continue to remember you, even after a five-year timespan. Rest assured, your animal will never forget you. The associative memory that dogs use helps them to immediately recognize scents, faces, and vocal tones. It will work when they see someone they love. There are videos of military personnel and college students seeing their dogs again after months or years. These pets are so excited to see their owners again. You do not have to worry if your dog has an associative memory about you.