Humans and dogs have come to rely on each other for protection, companionship, comfort, and happiness—needs and benefits that go both ways. When we display dominance over our canine charges, there can be disastrous results, but when respect and care are brought together, we come to know the goodness in a dog's soul. Here Jennifer Arnold teaches how to pick the right puppy, how to protect and care for your new best friend, why you should consider adopting an older dog, and how to know when it's time to let go.