References

Beaver, Bonnie V. (1999) Canine Behavior: A Guide for Veterinarians. W. B. Saunders Company, Philadelphia, Pennsylvania

Lindsay, Steven R. (2000). Handbook of Applied Dog Training and Behavior, vol. 1: adaptation and learning. Iowa State Press, Ames, Iowa.

Scott, John Paul and Fuller John L. (1965) Genetics and the Social Behavior of the Dog. University of Chicago Press, Chicago

Serpell, James (1995). The Domestic Dog: Its evolution, behavior, and interactions with people. Cambridge University Press, New York, New York