Animals are an integral part of our lives. We have domesticated animals for food and other products, companionship and recreation, all of which are important to our quality of life. Animals still plow fields in many developing countries, herd livestock, assist law enforcement officers, rescue people and guide the blind. Animal research enhances our knowledge and understanding of human biology and medicine. Many Wild animals are housed in zoos and wildlife parks simply for our enjoyment and edification. Humans are naturally fascinated with animal behavior and enjoy learning about the adaptations of animals to their environments. It is hard to imagine what our lives would be like if we humans were the only animals on our planet.

1. Animal roles 319