This hour-long program gives an overview on a few theories of how dogs evolved from wolves, and discusses breeding and how different breeds got to be so diverse in looks and, for lack of a better word, function (such as retrieving, herding, hunting, etc.). It is very entertaining to watch, and even though it touches upon topics as complicated as genetics, it is very easy to understand. It is a brief overview though, and for anyone looking for more in-depth info and more specific details on the evolution of dogs should check out Nature: Dogs that Changed the World. For anyone who loves dogs, though, watching this dvd would definitely not be a wasted hour. John Lithgow is a good enough narrator, and my only (minor) complaint is that the little cartoons they use to illustrate some of the points get to be a bit irritating.