If you knew people would pay extra for a bald dragon, could you pick which parents you should breed in order to get the highest number? The unit examines heredity and genetics through breeding dragons, mice, dogs, and tries to figure...

A comprehensive site that explores every part of dog ownership. Learn the anatomy of a dog, breeds of dogs, costs to take care of a dog, and how to train the new pet. In addition, there are online activities, a teacher's guide, and...

NOVA takes a comprehensive look at the origin of different species of dogs in this feature. Interesting information like, why do they come in so many shapes and sizes, and why do they have us right where they want us is provided.