From 18 to 24 months of age, puppies go through young adulthood. They begin to look like an adult, but still lack the judgment and physiology to make good choices. Impulse control may be lacking, and high-risk behaviors may surface. Towards the end of this period, domesticated dogs go through an important tollgate as they begin to develop inhibition. At 2 years of age, most working dogs are capable of professional capacity.
References
- Scott, J.P., and John L. Fuller. 1974. Genetics and the Social Behaviour of the Dog. A Phoenix Book, P570. University of Chicago Press. http://esbt.us/2y.
- Ha, J.C., and T.L. Campion. 2018. Dog Behavior: Modern Science and Our Canine Companions. Elsevier Science. http://esbt.us/2z.
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This work (A Canine Health Enrichment and Whelping Protocol, by the Old-fashioned Black & Tan English Shepherd Association) is free of known copyright restrictions.
