Is it heredity or environment that shapes the dog? Researchers J.P. Scott and John L. Fuller, authors of Genetics and Social Behavior of the Dog, bred and cross

Explains about "critical periods" of socialization and other developmental milestones that help create a temperamentally sound dog.

“Based on the latest findings in the field of canine cognition and behavior, this book is an invaluable resource.” —Hal Herzog, author of Some We Love, So