David Christopher grew up around animals, especially dogs and learned to train them from his father. He took his love of animals and opened his own obedience school, which he runs with his wife in Oakland, California. From group classes to one-on-one sessions, he is very well known for his ability to help correct dog behavior. David also fosters dogs for rescue groups, helping to socialize fearful and abused dogs so that they learn how to trust again and can be adopted out to new families.