At times, dogs appear to move and react like wild animals. Yet they are, by definition, domesticated. In perhaps only fourteen thousand years, humans have modified and manipulated a single species to create more than four hundred breeds. But for all their variety of appearance, all dogs are simply mutations of their closest ancestral relative... the wolf. How did the dog come to be so successfully domesticated from its wild ancestors? Dr. Rodney Honeycutt discusses the genetics of domestication and some of the special qualities of the dog, such as its phenomenal senses of hearing, smell, and taste. A survey of strange and wonderful breeds of dogs is presented, from dogs that whistle to dogs that sing, and the vulpines (foxes) which can climb trees. Also, some of the unique jobs of dogs are explored, from sniffing out termites, to herding goats and finding missing persons.

The Ultimate Guide: Horses is part of the Discovery Channel's nature series. Exploring the life of the powerful and majestic horse, the program features beautiful footage of horses in running packs, horses being born, horses gently grazing, and more. Expert commentary provides an educational overview of the dynamic creature, its life cycle and daily habits.